Sumire-16 sai, Sakamoto desu ga, Assassination Classroom, GTO, Golden Boy.
Does this sub-genre have a name, and can you think of any other anime/manga that fit in it?
comedy is not a sub genre and you are fucking retarded
What I mean is stories that center around a cast of mostly archetypes, and then the weirdo main character comes in and basically improves everyones lives massively then usually leaves at the end.
Doesn't have to be in a school, Oyaji is another example where he just improves the lives of his family members that have never seen him before.