System: Let's go and earn emotional value and fraud value
Zhang Moxun: Okay.
So...
Professor McGonagall: A first-year Animagus, impossible!
…
Zhang Moxun: Dumbledore! I want to learn three unforgivable spells.
Dumbledore: ... Okay, you can go to the restricted area. Whether you learn well or not depends on you.
A week later, Dumbledore: Oh! Merlin! I shouldn't have asked him to learn it. Why should first-year students be able to learn the three unforgivable spells!
…
Snape: Come to my office for detention after class.
…
We are not very close to the main characters. We can say hello and help a little bit, but we don't spend time together every day.
He and Draco are roommates, they don't look up or down, and they care about each other quite harmoniously, but Draco unilaterally thinks that they have a good relationship, but in fact they are not.
This is not a story where the protagonist turns into a mentally retarded child and his IQ drops as soon as he gets younger. Everything is for the purpose of profit.
There is no ambiguous link between the protagonist and no emotional line other than friendship.
(Comprehensive: Conan, Tomb Raider Notes, Bungou Stray Dogs, I will add more if there are more later,)