Why do I keep doing that to myself, watching and reading all of those sad and f*d up manga and anime.
Anyway, this wiki is probably dead, so if you read this. Sorry for the spoiler (I removed the spoiler, you're welcome). You should probably stop watching. Season 2 redcont some stuff from the manga. And since the manga has finished almost 10 YEARS ago now, there will never be a season 3.
Don't do this to yourself.