itch.io

I have since finished the game and will answer my own question for anyone else it concerns.

This game contains no major spoilers for any of the canon Danganronpa game, and is a self-contained story. There are slight references that might be at canon Danganronpa characters, and some situations are similar to ones you'd see in Danganronpa, but anyone who plays this will not be spoiled on any events that occur in any Danganronpa game. 

Does this game contain major spoilers for any of the official Danganronpa games? I want to play it with a friend but they haven't finished the series yet.