Kirihara's sister Midori, who turned into a delinquent girl after she failed in the exam, suffered from a pink eye attack.
The result was that the truant king reawakened and started a scuffle with the disciplinary committee member.
The most pitiful person is probably Akiya. This is the original post on the Rikkai University campus website:
Help! What should I do if my sister and the deputy minister are together? Waiting online, hurry!
As for how they got together——
Midori: Mr. Discipline Committee member, do you want to have a long-awaited puppy love with me?
Sanada: Not early at all.
Huh? ——The stupid hair is standing up, you wakame girl.