[Demon Slayer] Kintokiyama・Koujijuku Lodging Stone Kanagawa Prefecture

住所	〒250-0631 神奈川県足柄下郡箱根町仙石原

Mount Kinjizan (elevation 1,212 meters), located on the border between Kanagawa and Shizuoka prefectures, is a famous peak at the northernmost end of the Hakone Outer Rim Mountains. This mountain is steeped in the legend of Kintaro, the childhood name of Sakata Konjikidoki, and in particular, the “Koji Lodging Stone (Kintaro Lodging Stone)” is known as a massive rock where Kintaro and his mother, the Mountain Witch, are said to have sheltered from the night dew. In recent years, due to the connection between Rengoku Kyojuro from the popular anime “Demon Slayer” and the Kintaro legend, it has gained attention as a sacred pilgrimage site.

This article provides a comprehensive explanation from every angle, covering the charm of Mount Kinjizan and the Koji Lodging Stone, access methods, climbing routes, historical background, and connections to Demon Slayer.

Basic Information and Geographic Features of Mount Kinjizan

Overview of Mount Kinjizan

Mount Kinjizan is the northernmost peak in the Hakone Outer Rim Mountains, rising on the border between Hakone Town, Ashigarashimo District, Kanagawa Prefecture and Komoro Town, Sunto District, Shizuoka Prefecture. Despite its relatively modest elevation of 1,212 meters, the summit offers panoramic views of Mount Fuji, Sagami Bay, and the Hakone mountains, making it a spectacular destination that attracts many climbers year-round.

Basic Data:

Elevation: 1,212 m
Location: Hakone Town, Ashigarashimo District, Kanagawa Prefecture / Komoro Town, Sunto District, Shizuoka Prefecture
Mountain Range: Hakone Outer Rim Mountains
Type: Lava dome
Best climbing season: April to November (climbing possible in winter, but beware of snow and ice)
Climbing time: Approximately 1.5 to 2 hours from the trailhead to the summit

Topography and Geological Features

Mount Kinjizan is a lava dome formed by volcanic activity of the Hakone volcano approximately 400,000 years ago. The mountain body is composed of andesitic lava, and giant rocks are scattered throughout the surrounding area. These massive rocks are connected to the Kintaro legend and are named the “Koji Lodging Stone,” “Kintaro Ball Toss Stone,” “Kicking-Down Stone,” and others.

It is also recognized as part of the Hakone Geopark, serving as a valuable location for learning about volcanic history. From near the summit, one can see the entire scope of the Hakone Caldera, making it a geologically fascinating area.

The Koji Lodging Stone (Kintaro Lodging Stone)

The Rock Colored by Legend

The Koji Lodging Stone (Kintaro Lodging Stone) is a massive rock approximately 10 meters tall and 15 meters wide located at approximately 800 meters elevation along the climbing trail from the Koji Shrine (Kintaro Shrine) toward the Mount Kinjizan summit. The most distinctive feature of this rock is that its central section is split completely in two.

According to legend, Kintaro (the childhood name of Sakata Konjikidoki) sheltered from rain and wind with his mother, the Mountain Witch, beneath this rock, and even slept there. The crack in the rock forms a natural cave-like space, and there is indeed enough room for a few people to take shelter from the rain.

The Legend of the Split in 1931

An interesting anecdote remains about the crack in the rock currently visible. According to tradition, on a certain day in 1931 (Showa 6), this massive rock suddenly split in two with a loud roar. The nearby residents feared this might be the “anger of Konjikidoki,” and afterward they came to cherish this rock all the more.

From a geological perspective, the splitting is thought to have been caused by weathering within the rock and expansion and contraction due to temperature changes, but by becoming connected to the legend, it came to be recognized as a more mystical location.

Access to the Lodging Stone and Points of Interest

The Koji Lodging Stone is located about 30 to 40 minutes up the trail from the Koji Shrine trailhead. After passing the “Kintaro Ball Toss Stone” just past the trailhead entrance, a massive rock with overwhelming presence gradually comes into view.

Points of Interest:

Observation of the interior of the rock’s crack
Moss and plants growing on the rock surface create a mystical atmosphere
Natural sculptural beauty integrated with the surrounding forest
Popular photography spot (especially during the morning light hours)

A small shrine stands in front of the rock, and visitors today—both locals and hikers—can be seen offering prayers.

The Kintaro Legend and the History of Sakata Konjikidoki

Overview of the Kintaro Legend

Kintaro is the protagonist of a representative Japanese folk tale, depicted as a boy wearing a red belly band and carrying an axe. He is known as a boy of tremendous strength who grew up on Ashigara Mountain (including Mount Kinjizan in the Ashigara Mountains), wrestling bears and playing with animals.

According to legend, Kintaro was born as the son of a mountain witch and spent his childhood in the area around Mount Kinjizan. Later, he was discovered by Minamoto no Yorimitsu, became his retainer, and took the name Sakata Konjikidoki. As one of Yorimitsu’s Four Heavenly Kings, he is said to have distinguished himself in deeds such as the subjugation of the sake-drinking demon of Mount Ooe.

Historical Background and Reality

Sakata Konjikidoki is believed to have been an actual military commander from the mid-Heian period, though detailed records are scarce, and legend and historical fact are intermixed. His name appears in classical literature such as the “Konjaku Monogatari” (Tales of Times Now Past) and “Heike Monogatari” (The Tale of the Heike), and from the Muromachi period onward, he became popular as a subject in Noh theater and kabuki.

During the Edo period, Kintaro became established as a symbol of wishes for the healthy growth of children, and his figures and images became customary decorations for the Boys’ Festival on May 5th. Today, the tradition of displaying Kintaro dolls and pictures on Children’s Day, May 5th, remains.

Legendary Spots Around Mount Kinjizan

Many places connected to the Kintaro legend remain around Mount Kinjizan and its surroundings:

Kintaro Ball Toss Stone:
A massive rock located just past the trailhead entrance from the Koji Shrine. According to legend, Kintaro lifted this stone as lightly as a ball and played with it.

Kicking-Down Stone:
A boulder said to have been kicked down by Kintaro with his tremendous strength. It is located along the climbing trail.

Koji Shrine (Kintaro Shrine):
A shrine dedicated to Sakata Konjikidoki. Located at the trailhead, many climbers stop here to pray for safe climbing. The shrine grounds display materials and statues related to Kintaro.

Kintaro Statue and Giant Axe at Mount Kinjizan Summit:
A Kintaro statue and a large axe object are installed at the summit, serving as a popular photo spot.

The Connection Between Demon Slayer and Mount Kinjizan

The Link Between Rengoku Kyojuro and Kintaro

Rengoku Kyojuro, the Flame Pillar from the hugely popular anime “Demon Slayer,” has been noted by fans to share similarities with the Kintaro image in both appearance and personality, leading to discussions about connections to the Kintaro legend.

Common Points:

Hair color of fiery red and yellow (evoking Kintaro’s red belly band)
Strong sense of justice and a stance to protect the weak
Bold and cheerful personality
Extraordinary physical ability and combat power

The techniques Rengoku uses in the series, such as “Flame Breathing,” are named “Unknown Fire,” “Surge of Intense Flame,” and other names that symbolize strength and justice, which seem to echo the Kintaro legend of tremendous strength.

Mount Kinjizan as a Sacred Pilgrimage Destination

Following the massive hit of the “Demon Slayer” film “Mugen Train,” the number of Rengoku fans making “sacred pilgrimages” to Mount Kinjizan has increased. While not officially recognized as a sacred site, the following ways of enjoying it have spread among fans:

Taking commemorative photos at the Koji Lodging Stone with Rengoku-inspired merchandise
Praying at the Koji Shrine with thoughts of Rengoku
Taking photos with the Kintaro statue at the summit
Sharing on social media with hashtags such as “#RengokuAndMountKinjizan”

The ability to express devotion to the work through the healthy activity of climbing has won support from both anime fans and hiking enthusiasts.

Complete Guide to Mount Kinjizan Climbing Routes

Koji Shrine Course (Most Popular Route)

Course Overview:

Trailhead: Koji Shrine (Kintaro Shrine) entrance
Time Required: Approximately 1 hour 30 minutes to 2 hours up, approximately 1 to 1.5 hours down
Distance: One way approximately 2.5 km
Elevation Gain: Approximately 550 m
Difficulty: Beginner to intermediate level

Route Details:

Koji Shrine (elevation approximately 650 m):

A shrine at the trailhead where you can pray for safe climbing. The shrine grounds display materials related to Kintaro. Use the restrooms here.

Kintaro Ball Toss Stone (approximately 15 minutes from starting the climb):

A massive rock that appears soon after entering the trail. From here, the true climbing trail begins.

Koji Lodging Stone (approximately 30 to 40 minutes from starting the climb):

The main focus of this article. Take a short rest here and reflect on the legend. Don’t forget to take photos.

Koji Shrine Junction (approximately 1 hour from starting the climb):

A junction with the Yagura Peak Pass direction. From here to the summit, steep climbing continues.

Chain Section (just before the summit):

A rock section with chains installed. Climb carefully. Special caution is required in bad weather.

Mount Kinjizan Summit (elevation 1,212 m):

There are 2 tea shops at the summit (Kintaro Tea Shop and Kintaro’s Gold Tea Shop), where you can enjoy the specialty “Kintaro Masacari Udon” and “Nameko Soup.” Biotech toilets are also available.

Points to Note:

This route has relatively frequent reports of getting lost, so use of map apps and GPS is recommended
Be careful in rainy weather as rock surfaces become slippery
The trail is maintained, but many rocky areas and unstable footing exist in some sections

Other Climbing Routes

Yagura Peak Pass Course:

Trailhead: Koji Shrine entrance
Features: More gradual than the Koji Shrine course and better for beginners. Reaches the summit via Yagura Peak Pass.
Time Required: Approximately 2 hours up, approximately 1 hour 30 minutes down

Otome Pass Course:

Trailhead: Otome Pass (along National Route 138)
Features: Excellent views of Mount Fuji. Goes via Nagao Mountain.
Time Required: Approximately 2 hours 30 minutes up, approximately 2 hours down

Ashigara Pass Course:

Trailhead: Ashigara Pass (Shizuoka Prefecture side)
Features: Approach from the Shizuoka side. Goes via Ashigara Castle ruins.
Time Required: Approximately 2 hours up, approximately 1 hour 30 minutes down

Enjoying Loop Courses

Mount Kinjizan is also popular for loop climbing by combining multiple routes. For example, climbing from the Koji Shrine and descending to Otome Pass allows you to enjoy different scenery while visiting scenic spots at Nagao Mountain and Otome Pass.

Access Methods and Parking Information

Access by Public Transportation

Train + Bus:

From the Shinjuku area:

Odakyu Line “Shinjuku Station” → “Hakone Yumoto Station” (approximately 1 hour 30 minutes)
From Hakone Yumoto Station, take Hakone Tozan Bus “Tougenkai Line” to “Koji Shrine Entrance” (approximately 40 minutes)
From the bus stop, approximately 5 minutes walk to the trailhead

From the Gotemba area:

JR Gotemba Line “Gotemba Station” to Hakone Tozan Bus “Hakone Line,” get off at “Sengoku”
From Sengoku, approximately 15 minutes walk to “Koji Shrine Entrance”

Expressway Bus:

Highway buses run from Shinjuku to the Hakone area, available at Sengoku and Tougenkai
Reservation required, advance confirmation recommended

Access by Private Vehicle and Parking

From the Tokyo area:

Tomei Expressway “Gotemba IC” → via National Route 138, approximately 30 minutes
Parking available near “Koji Shrine Entrance”

Parking Information:

Koji Shrine Parking:

Capacity: Approximately 15-20 spaces
Fee: Free (some private parking lots charge around 500 yen)
Congestion: Often full by early morning on weekends and holidays
Recommended Arrival Time: Arrival before 7 a.m. on weekends is recommended

Sengoku Area Parking:

If the Koji Shrine parking is full, use public parking in the Sengoku area and proceed to the trailhead on foot or by bus

Notes:

Street parking is strictly prohibited
Particularly crowded during leaf-viewing season (late October to mid-November)
Early morning departure is key to securing a parking spot

Summit Vistas and Points of Interest

The Grand Panorama of Mount Fuji

The greatest attraction of Mount Kinjizan’s summit is, without question, the spectacular view of Mount Fuji. On favorable weather days, you can see the majestic form of Mount Fuji with its foothills spread before you. Especially in winter on clear days, snow-capped Mount Fuji shining against a blue sky is breathtakingly beautiful.

Scenic Viewpoints:

Early morning: Mount Fuji lit by the morning sun (Diamond Fuji may be observable depending on conditions)
Daytime: Contrast between blue sky and Mount Fuji
Evening: Mount Fuji dyed by the setting sun and Sagami Bay

360-Degree Panoramic Views

From the summit, you can enjoy 360-degree panoramic views:

North:

Tanzawa Mountains
Mount Oyama
Sagami Bay

East:

Hakone Outer Rim Mountains
Lake Ashi
Mount Komagatake, Mount Kamiyama

South:

Hakone Caldera
Mount Myojin, Mount Myojo

West:

Mount Fuji
Mount Atagake
Southern Alps (if conditions are favorable)

Tea Shops and Cuisine at the Summit

There are 2 mountain lodges (tea shops) at Mount Kinjizan’s summit, serving as rest spots for climbers.

Kintaro Tea Shop:

Specialty: “Kintaro Masacari Udon” “Nameko Soup”
Features: Served in bowls designed after an axe
Other offerings: Oden, coffee, sweet sake, etc.

Kintaro’s Gold Tea Shop:

Specialty: “Kintaro Soup” “Mountain Vegetable Udon”
Features: Warm, homey atmosphere
Other offerings: Sweet red bean soup, ramen, etc.

Both tea shops provide warm meals that seep into tired bodies. Meals enjoyed while taking in the views are exceptional.

Seasonal Charm and Best Climbing Periods

Spring (April to May)

Features: Fresh greenery is beautiful, and temperatures are suitable for climbing
Points of Interest: Rhododendrons at the base, cherry blossoms
Notes: Golden Week is crowded
Clothing: Long-sleeved shirt + fleece

Summer (June to August)

Features: Lush greenery, forest bathing is refreshing
Points of Interest: Alpine plants, insect observation
Notes: Rain gear essential during rainy season, heatstroke precautions in summer
Clothing: Quick-dry T-shirt, hat essential

Autumn (September to November)

Features: Autumn foliage is beautiful, clear air, excellent views of Mount Fuji
Points of Interest: Autumn foliage (peak from late October to mid-November)
Notes: Very crowded during leaf-viewing season, difficult to secure parking
Clothing: Layer for adjustment, mornings and evenings are cold

Winter (December to March)

Features: Crystal-clear air, finest views of Mount Fuji
Points of Interest: Snowy landscapes, rime, Diamond Fuji
Notes: Be careful of snow and ice; crampons may be necessary on some days
Clothing: Cold-weather gear, gloves, hat essential

Most Recommended Times:

For Mount Fuji views: November to February (clear air)
For beginners: April to May, September to October (stable weather)
For autumn foliage: Late October to mid-November

Climbing Preparation and Equipment

Essential Equipment

Basic Gear:

Hiking boots or trekking shoes (sneakers not recommended)
Backpack (20-30L capacity)
Rain gear (separate top and bottom)
Map and compass (or smartphone map app)
Headlamp (with spare batteries)
First aid kit
Trail snacks and water (1L or more)
Portable toilet (just in case)

Seasonal Additional Gear:

Winter:

Lightweight crampons (6-point)
Cold-weather clothing (down jacket, etc.)
Insulated bottle
Spats

Summer:

Sunscreen
Insect repellent spray
Salt supplement tablets

Physical Fitness and Technical Level

Mount Kinjizan can be enjoyed by beginners, but note the following:

Physical Fitness:

Ability to climb approximately 550 meters elevation gain is necessary
Practicing stairs regularly is helpful
Prior practice on low mountains is recommended if you lack climbing experience

Technical Skills:

Basic climbing skills are sufficient
Chains are present, so understand the three-point support basics
Be careful about foot placement on rock sections

Safety Precautions for Responsible Climbing

Submission of Climbing Plans:

Share your climbing plan via the Kanagawa Prefectural Police “Climbing Plan System” or apps like YAMAP

Weather Confirmation:

Always check the weather forecast before departure. Consider postponing if thunderstorms are predicted

Time Management:

Aim to begin descent by 2 p.m. at the latest (considering sunset time)

Solo Climbing Caution:

Group climbing is recommended when possible. If climbing solo, always submit a climbing plan

Getting Lost Prevention:

The Koji Shrine course has relatively frequent reports of getting lost, so always confirm your location on a map

Nearby Attractions and Hot Springs

Hakone Sengoku Area

Sengoku Pampas Grass Meadow:

In autumn, an entire meadow of golden-hued pampas grass creates a spectacular sight
Many people visit it along with climbing Mount Kinjizan

Hakone Glass Forest Museum:

An art museum of Venetian glass
Enjoy a cultural experience after climbing

The Prince and the Star Museum:

Recreates the world of Saint-Exupéry
Popular with families

Recommended Hot Springs After Descent

Ubako Hot Spring:

A hot spring where Kintaro is said to have healed eye disease
Day-use bathing facilities such as Shumeikan available
Water type: Simple hot spring

Sengoku Hot Spring:

Multiple day-use bathing facilities scattered throughout
Good access close to the trailhead
Water types: Simple hot spring, chloride spring, etc.

Gora Hot Spring:

A major hot spring representing Hakone
Day-use bathing facilities are abundant
Water type: Sodium-chloride spring

Hakone Yumoto Hot Spring:

Hakone’s largest hot spring resort
Numerous day-use bathing facilities around the station
Convenient for souvenir shopping

Gourmet Dining After Climbing

Sengoku Area:

“Yamayaku”: Famous for natural Japanese yam dishes
“Tamura Ginkatsu Tei”: Tofu cutlet stew is the specialty

Hakone Yumoto Area:

“Hatsuhana Soba”: Popular for natural yam soba
Various hot spring rice cake shops

Frequently Asked Questions

Can beginners in mountaineering climb this?

Mount Kinjizan can be climbed by beginners, but you need the stamina to climb approximately 550 meters elevation gain and basic mountaineering skills to walk on rocky terrain. If you’re normally inactive, prior practice on low mountains is recommended. The Koji Shrine course is relatively short, but chains are present, so proceed carefully. If unsure, the Yagura Peak Pass course is more gradual.

Can I just go see the Koji Lodging Stone without reaching the summit?

It’s possible. From the Koji Shrine, you can reach the Koji Lodging Stone in 30 to 40 minutes of climbing. You can turn back without reaching the summit, but you’ll need climbing gear. Plan for approximately 1 hour 30 minutes to 2 hours round trip.

I want to visit as a Demon Slayer sacred site pilgrimage. Are there special points of interest?

While not an official sacred site, fans visit because of the connection between Rengoku Kyojuro and the Kintaro legend. Taking commemorative photos at the Koji Lodging Stone, praying at the Koji Shrine, and photographing with the Kintaro statue at the summit are popular. Many fans bring Rengoku-inspired merchandise.

When should I go to avoid crowds?

Early morning departure on weekdays is least crowded. On weekends and holidays, arrival before 7 a.m. is recommended. Particularly during the leaf-viewing season (late October to mid-November) and Golden Week, very crowded conditions occur, making early morning departure essential. Winter weekdays are relatively uncrowded, and Mount Fuji views are at their best.

What are the operating hours of the tea shops at the summit?

Both shops normally operate from around 9 a.m. to 4 p.m., but hours vary with weather and season. Winter hours may be shorter. For reliable access, aim to arrive in the morning to early afternoon. Closing days are irregular, so advance confirmation is recommended.

Can families with children climb it?

It’s possible for upper elementary school children with climbing experience, but the chains require caution. Young children and lower elementary students would find it difficult. For families with children, the Yagura Peak Pass course is safer. Maintain a relaxed pace, allow frequent breaks, and ensure adequate hydration.

Can I climb with a dog?

Dog climbing is possible, but the dog must be carried through the chain section. For consideration to other climbers, keep the leash short and wait if you meet others. Dog waste must be carried out. Pets cannot enter tea shops, though some may allow them on terraces.

When is the peak time for autumn foliage?

Mount Kinjizan’s autumn foliage typically peaks from late October to mid-November. The difference in elevation means the top begins coloring first, with the foliage line gradually descending. At peak season, beech and maple trees turn spectacular red and gold, and the combination with Mount Fuji is magnificent. This season is most crowded, so early morning departure is essential.

Conclusion: The Charm of Mount Kinjizan and the Koji Lodging Stone

Mount Kinjizan and the Koji Lodging Stone are truly multifaceted destinations where history, legend, nature, and modern pop culture intersect.

Despite its modest elevation of 1,212 meters, the Mount Fuji view from the summit is among Hakone’s finest. The historic sites connected to the Kintaro legend, like the Koji Lodging Stone, evoke wonder across more than a thousand years. And recently, attention has grown as a sacred pilgrimage site for “Demon Slayer” fans, adding new cultural value.

Accessible to both beginners and experienced climbers, with nature beautiful in all seasons, delicious warm meals at the summit, and hot springs available after descent—Mount Kinjizan offers it all. With so many attractions, each visit brings new discoveries.

When you stand before the Koji Lodging Stone, gazing up at the massive split rock, what will you feel? The warm tale of Kintaro and the Mountain Witch? The thunder of 1931? Or perhaps Rengoku’s words to “set your heart ablaze”?

Please visit Mount Kinjizan, where history and legend come alive. Certainly, a special experience awaits you there.