Buy BIOSECRET

Mature Content Description

The developers describe the content like this:

As an event that cannot be avoided in order to clear the game,
These scenes include:
-Nudity.
-Sexual acts by monsters.
-Non-consensual sexual acts.
-Physical restraint.
-Violent sex.
-Violent words and acts.

About This Game

※All characters in this game are 18 years of age or older

*If receiving an error message for missing DLLs, please confirm that the VC2010, VC2012, VC2013, and VC2015 redistributables are installed.For Windows 7 and Windows 8 users, updating to the latest OS version via WindowsUpdate may be required before the rebistributables can be installed.*

Horror Action-Adventure Game with Heroine Cuckold

Friday after school, Aoki took his photography club friends Rin and Shinjo to an abandoned mansion.
There were rumors about the mansion on Mr. Kokotsu, scaring people away.
The three students were not afraid and entered the mansion. anyway.
After they got stuck in the sudden storm, two of them heard Shinjo screaming.
Shinjo went missing, then somebody kidnapped Rin.
The PC booted up itself and started playing a video of Rin and a middle-aged man in a lock-up.

[Characters]

- Osamu Aoki
A devoted fan of abandoned buildings.
A member of the photography club and taking pictures of abandoned buildings.


- Rin Sayama
Started dating Aoki a half years ago. Gets easily frightened.
Gets stuck in an abandoned mansion and......




- Makoto Shinjo
Another member of the photography club.
Good friends with Aoki but feeling awkward around Aoki and Rin.




- M
An ominous man who traps Aoki and his friends in the mansion.




[System]

This is a horror action-adventure game.
Fight against bio monsters with short-ranged (knife, axe), long-ranged (guns), and explosive weapons (grenades).
Art gallery and scene gallery are available.

Most XXX scenes feature cuckold (NTR).
The heroine is voiced.

Arts: 21 Pattern + Variations
Events: 21 Variations
Endings: 2 Variations
Heroine Voice Actor: Miki Honda