Hyakki Onsen: Cozy Idle Inn
Cozy Yokai Bathhouse Sim
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Welcome woodland animals in Woodland Baths: five turn-based stages, mystical visitors, and a guest book to fill. Take your time matching each group to a bath.
Manage a peaceful Japanese hot spring inn alongside 40 charming yokai creatures in this cozy idle simulation game!
Even while you are away, your inn steadily collects Yudama (in-game earnings). Expand bathhouses, renovate your facilities, and welcome mythical spirits to restore a forgotten mountain retreat at your own gentle pace.
There is no paid random gacha and no paid gameplay currency. You choose which yokai candidate to invite to your inn.
— Deep in a misty mountain valley stands an abandoned bathhouse.
Human staff are nowhere to be found. But supernatural helpers? There are plenty.
A Kappa scrubs the cypress tubs clean, a Bakeneko fluffs the cozy futons, and a Chochin-obake lantern lights the path for evening travelers. As the Innkeeper, the future of this secluded haven rests in your hands.
Take a breath, relax by the rising steam, and build a heartwarming hot spring resort with your friendly yokai staff.
■ Cozy Idle Progress: Earn While You Rest
Your inn gathers Yudama automatically while you work, study, or sleep.
• Offline earnings accumulate for up to 8 hours initially.
• Rebuild and expand the inn to permanently extend your offline time limit.
• Return whenever you like to collect your Yudama, upgrade facilities, and check on your yokai.
■ 40 Distinct Yokai to Collect & Assign
Yokai work across five essential roles: Bathkeeper, Room Attendant, Chef, Gatekeeper, and Parlor Attendant.
• Meet folklore favorites including Kappa, Yuki-onna, and the Nine-tailed Fox.
• Learn their whimsical personalities in the Yokai Record: Akaname views cleaning baths as a midnight snack, while Amanojaku invites guests by telling them to stay away!
• Pair matching yokai with their ideal facility roles for a 1.5x efficiency bonus.
• Unlock 43 beautiful Emaki scroll illustrations as you discover special yokai pairings.
■ Generational Renovations & Prestige
Develop your inn across 13 unique facilities. When your inn's reputation reaches key milestones, you can perform a Renovation to usher in the next generation.
• Carry forward Spirit to unlock permanent enhancements on the Spirit Tree and grow your next inn even faster.
• Watch your humble bathhouse evolve across six distinct generations with grander architecture and scenic mountain views.
■ Direct Recruitment at the Yokai Shrine: No Paid Gacha
New yokai join your inn through the Yokai Shrine.
• Review candidate selections and recruit the exact yokai you want using in-game Yoki.
• Recruit slots recharge naturally by 1 slot per day (up to a bank cap of 14). No endless random paid rolls.
■ Two Ways to Welcome Guests
In Woodland Baths, match each animal group to one of two baths by temperature and group size. Plan at your own pace across five turn-based stages.
Record nine species, including mystical visitors, in the Woodland Guest Book after a satisfying visit. Earn Yoki for milestones, with no Yudama cost to play or retry.
The original hospitality game remains: choose the yokai best suited to each guest’s request and earn rewards for successful service.
■ Transparent, Player-Friendly Design
• No paid random gacha, no paid gameplay currency, and no forced interstitial or banner ads.
• Rewarded video ads are entirely optional.
• Optional "Video-Skip Talisman": A one-time convenience purchase that allows you to claim rewarded bonuses without watching video ads. Daily collection caps, reward amounts, and claim requirements remain completely identical.
• Cosmetic Seasonal Sets: Preview decorative room themes and yokai outfits in the shop before purchasing. Outfits and decor are purely visual and do not alter gameplay stats or progression speed.
Morning bath, midday soak, evening dip.
The water is warm and ready.
Welcome home to Hyakki Onsen.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
New: Woodland Baths!
• Guide animal groups through five turn-based stages, matching water temperature and group size. Time pauses while you plan.
• Record nine species in the Woodland Guest Book, including mystical visitors.
• Earn Yoki for milestones, follow your next goal, and save rewards and records before moving on.
• Refined the opening story, first-time inn setup, and layouts across screen sizes.
The developer, Shumpei Suzuki, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Shumpei Suzuki
- Size
- 287 MB
- Category
- Simulation
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 2 more
- English, Japanese, Traditional Chinese
- Age Rating
9+
- 9+
- Infrequent
Horror/Fear Themes
Contains
Advertising
- In-App Purchases
Yes
- 山彩りの装いと間・追加 $3.99
- 山彩りの宿セット $5.99
- 月待ちの装いと間・追加 $3.99
- 蛍涼みの装いと間・追加 $3.99
- 月待ちの宿セット $5.99
- 蛍涼みの宿セット $5.99
- 花便りの宿セット $5.99
- 雪明かりの装いと間・追加 $3.99
- 雪明かりの宿セット $5.99
- 月見の宿 $2.99
- Copyright
- © 2026 Studio-Gennai
