@@Nemer49994 I mean 'Kana almost dies' because of their own obsessed reasons and you save their life (in that ending at least). Almost every event card is like "I'm done with this and we shouldn't be doing this". I'm not saying that Kana owes following you around and possibly should be recovering from a major surgery for longer than an afternoon but it's not like you just spring this up on them too.
After selecting a character and backstory, you'll have to select to do a normal run or endless mode, and then an old god. Each old god has its own events, and they all have a playthrough-affecting gimmick.