Read manga: Sensei, Wakarimasen.

manga
Summary:

[from Fantasy Shrine:]“You’re like a child, Sensei!” is what Ono said as he stared at his favorite teacher… who is also a man…The teacher-in-training, Shiina, never intends to have a relationship with the perfect student, Ono. However, Ono snaps and pushes Shiina to the floor…!An angst love story about a hot-blooded student and a gun-shy sensei.