COTE: Unfamiliar reaction

This work is in a section of reaction fics, ones that I like to read, but everything is either discontinued or finished by me. That's why, I thought: "Why not write another one?", it's not like I will get sued for copyright :/
So, the timeline should be about right after the Sudo's save(midterm one), so about Vol 1 C10 or Vol.2 Prologue.
I'd like to say I prefer staying with the character to the most, there wouldn't be any categories, such as "Defects", "Smart students", etc. I am sure it wouldn't be a problem, right? No lemons, though!
So, Welcome, to the classroom of the elite!