3. Using Canon Characters are okay, as long as there is a twist on their characters.

By canon characters, do you mean strictly Danganronpa and Your Turn to Die characters, or can it be any sort of already created character (ex: Nintendo characters)?

Also, is the game mechanics supposed to strictly follow Danganronpa/Your Turn to die mechanics? Or can it be any type of game as long as it follows a death game theme, prologue, and chapter 1?

Is the game engine strictly RenPy, or can any game engine be used?

By canon characters I mean characters that were made for the setting. Danganronpa characters in a DR Fan Game and Your Turn to Die characters in a YTTD Fan Game. Also any game engine can be used and you don't need to strictly follow the mechanics of Danganronpa or Your Turn to die