You should do the bad and neutral endings too. Rin's "true" ending is the neutral, not the good (according to one of the devs). And Hanako's bad ending is something that just has to be experienced. It's one of the great memes of this game
I'm a little sad my favorite series to fall asleep to is coming to an end. It was nice watching you read through something that was so impactful to me as a kid. Hope