Long Version of the Summary: Well, let's just put this into the best of ideas.
What if, every single person in Hajime's class were seriously competent and we're taking things a bit... too seriously?
Like, nobody's taking it easy, even the students know exactly what they're doing, they have proper personalities, even though there will be friendly rivalries between several students.
Hm...
I don't know...
This is a challenge I'll give to myself.