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Adult Only · 18+
Happiness Double Room
It's the end of summer, and you've been abducted by a sister you've known for a long time. Forget all your past troubles, distress and everything bothersome, just spend your time happily with Sister in the days to come!
What players say
Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-26.
“The story is quite dark wth 💀💀 Still the bond between MC and the heroine is absurdly wholesome.”
— a player, Steam review · 6 hrs played“If you're looking for a good story, then this game is definitely for you! Genuinely, this was one of, if not the best, visual novels I have ever played. Shin-chan and Minami's relationship can develop really well depending on the choices you make, and I really enjoyed seeing how…”
— a player, Steam review · 14 hrs played“very good”
— a player, Steam review · 5 hrs playedAchievement stats
Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-27.
Price tracking
US-region pricing (USD), sampled twice daily by our own tracker since 2026-09-27. Steam prices vary by region — always confirm your local price on Steam.
Regional prices at last sample, in local currency — Steam sets each region's price independently.
Cheapest → most expensive, converted to USD at ECB reference rates (2026-09-25). Relative comparison only.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
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Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-09-26.
| Genres | Adventure, Casual, Indie, RPG, Simulation, Strategy |
| Features | Single-player · Family Sharing |
| Languages | Traditional Chinese, English, Russian, Japanese * , Simplified Chinese, Korean * |
| Achievements | 18 |
Minimum system requirements (PC)
Minimum: OS *: Windows 7 64bit OS Processor: Core i3 Memory: 2 GB RAM Graphics: HD Graphics Storage: 6 GB available space