Monster? Immortal? Imp?
No matter what you are, you still have to go to high school! They are all going to be tortured by the senior year of high school! It's all about enjoying your senior year!
Class teacher's famous saying: If you don't experience the life of the senior year of high school, it is an incomplete life.
What's in the senior year of high school?
High pressure, sea of questions, and a series of deadly exams?
Eating, sleeping, cleaning, all three connected?
Misunderstandings, fights, secret loves, running away, various adolescent incurable diseases?
Anyway, these little demons and little devils have to go through it...