The trigger was an invitation letter I received from my uncle.
He was supposed to be an invited guest at the pension ``Mobius'', a lodging facility for young people, but when he saw something he had never seen before, a ``mystery'' began to unfold.

"Why don't I remember...?"

A ``mystery'' that happens to someone who was supposed to be an invited guest.
Please try to solve it by yourself.

A story where mysteries lead to more mysteries and a single trigger turns everything upside down

The mystery is revealed little by little, and just when you think you know the ending, one action you take changes everything.
Enjoy the chilling development and ending.
Also, depending on the choices you make, it may become a BL version, so you can enjoy a wide range of stories.

Using Live2D! Almost full voice during conversation! (Voices are in Japanese only)

Almost full voice during conversation. (Headphones (earphones) recommended) Move and speak with rich expressions using Live2D.

Mystery-solving gimmick balance with moderate difficulty level

There are mystery-solving and mystery scenes, so please have paper and pen (or notepad) ready before playing.

Play time

1 hour and 30 minutes per lap

Number of ends

6

Caution/Disclaimer

・This game is fiction. It has no relation to any actual person, organization, incident, etc.
・There is no intention to encourage crime or murder.
- The author (Garnet Bloom / @shian_3rd / Causality Production Committee) will not be held responsible for any defects or troubles that may occur while playing this game.