Synopsis
Upon waking, you find yourself in an unfamiliar room.
You and your best friend had planned a 10-day summer vacation in Okinawa. You boarded the airport shuttle bus and enjoyed the scenery together—but everything after that is a blank.
Is this a hotel? Did you fall asleep on the bus?
But the room door won’t open, and what appears to be a window is merely an LCD monitor displaying scenery. Trapped in this mysterious sealed room, a display screen shows only cold, merciless text:
“You have been selected as experimental subjects for behavioral analysis.”
To escape this room, you must choose one of several daily tasks and complete it exactly as specified. A minimum of 10 days. 10 choices.
Two options each time:
Let your best friend hurt your body, or
Torment your best friend’s body and wound their heart.
Two people caught in this cruel and brutal dilemma—what ending awaits them?
Get “Room No.9” on FANZA
This Week’s Top Rankings:
Interested? Get the free trial here ↓






![Big Boob Fantasy Gaiden [Interactive Toy Compatible]](https://henhenta.com/wp-content/uploads/2026/04/waffle_0041-300x232.jpg)

![Mommy Color Sexual Awakening Declaration! [DL Version]](https://henhenta.com/wp-content/uploads/2026/04/hobc_0429-300x169.jpg)
![Karmaruka ✱ Circle [DL Version]](https://henhenta.com/wp-content/uploads/2026/04/e38090dle78988e38091e382abe383abe3839ee383abe382abefbc8ae382b5e383bce382afe383ab-300x169.jpg)

