B.A.D. Beyond Another Darkness - Vol. 1 Ch. 1

[MangaDex]

 

[BakedBanana]

Looks like a lot of manga original stuff so far. Though I'm not liking how they ruined the whole mystery of Shizuka in just the first chapter. In the light novel, the first volume slowly feeds you info on how exactly the MC got into this predicament, and how Shizuka died. Here, it's all out in the open.