The whole thing is quite intriguing and I can't deny that Dokuro's design is pretty damn cool. There's clearly a big world here that has a lot of potential, and for a game made in one night, it's pretty good!
However, I need to say that the warning for "suicide mentions" doesn't really feel enough for me, considering how big of a part it ultimately plays here. When a character is actively talking about how they don't want to go back to the world of living and the opening scene is, in a way, musings of a suicidal person, it does go a bit beyond that.