When I was wondering why that teacher's older brother was so admit about sending iruma back to the human until he got call from his psycho dad. "Why is he such an ass- Oh nevermind his dad is a monster. Okay, you know what I understand you now. You're cool dude."
That ending got me fucked up, what was the point of saying she is gone only for her to be alive 50 years later!! I'm out here crying!!