It is called the guardian relationship. Better ask your mom and your dad why teachers, the police, the soldiers, or even your aunt and uncle cannot have sex with you.
You read watamote, you laugh. This is comedy.
Tried and tested.
Anyway, comedy is set by an elite group of people, called "the standard," not by #entitledones like you & me.
Manga chapter so peak so is episode 12 of the anime.
I guess they gotta sell Jun Maeda masterpiece in all formats.
Sadly, "The day I became God" is just a poor copy of Charlotte.