Genesis

Guessed right on 1st try. Ending D
Was able to find Ending B and A afterwards.
Game is softlocking (chat hangs) before the second night when [redacted] is guessing [redacted]'s special role, but only if you choose Happiness at the start.

I also want to know what kind of engine you used to create this game.

 I don't think this is Renpy because I played a lot of visual novels created in Renpy and they have a certain aesthetic to them, but I also don't think this visual novel was created in Unity or Construct.

I'm actually interested in the engine name if you don't mind sharing it because it looks neat and unique looking. I'm also kind of a freak when it comes down to game engine since it's my hobby so whenever I find a new engine I just have to know its name. 

If I have to guess but based on the UI used in this game and the way the game is scripted, I will say it was created in Gamemaker engine. You can the similarities very clearly in this vid but then again, I could be wrong.

what engine is this made on