背徳せんせーしょん

Senpai x Kouhai!! Teacher x Teacher!! Girl x Girl (?)!!
The sensation of immoral couples on a certain campus.

Marika Shirai was a pervert teacher always on the edge of crossing over the cool line.
Hana Nishikigi was a math teacher who felt like something was missing in life.

School isn't everything! Studying isn't just about classroom busywork!