Manyuu Mesugaki wo Wakaraseru!

Sho Aiba, the homeroom teacher of Class C, was having a hard time getting his students to listen to him.
He especially had it especially difficult with Riko Kishihana, a big-breasted girl, who would provoke him wherever he went, even in the middle of class.
Riko's provocations escalated day by day...
Eventually, Sho ranned out of patience and crossed a line to make the cocky brat understand...



(Source: DLsite)