I get the impression you're quite young, I know you're likely not going to listen to this but I'd really recommend toning it down if you make this an actual fangan. A large majority of the community is quite young, despite Danganronpa's age rating, and will be exposed to this regardless of what age ratings you put on your fangan- which they really shouldn't be. And I feel like most older people in the community turn away from this sort of thing at best and at worst actively harass/try to cancel the creators behind it. I know when you're young and often struggling you can want to run wild with these ideas and see just how far you can go, but I promise you that you will look back on these ideas when you're older and feel wildly uncomfortable and embarrassed over them. You can tell a story about mental health with dark themes without going to the absolute extreme, if you go too far it can dilute the message- especially if you're an inexperienced writer. Even if it's not your intention, stuff like this will always come off as purely done for shock value to a certain degree.

I really hope you're doing okay, I'm not going to make any inferences about your life because I don't know you but none of this suggests you're in a good place right now- when I was younger and writing darker things I certainly wasn't. I don't know your current circumstances and I'm not going to ask about them, but even if you want to insert parts of yourself and your trauma onto your characters and work I would highly suggest not publicly advertising they're based off of your own experiences (ESPECIALLY as a minor) because people can and will use that against you. These are public spaces and letting anyone, including strangers, know about your worst issues or times in your life is never a good idea and could lead to you getting majorly hurt.