There is a rumour going around Sakura Gakuen about a teacher named Kyoko Sakurai, or 'Sensei', being a ruthless and cold teacher. Some called her a 'demon teacher'. One day Kiriyu found those rumours to be fake... the truth was she was really cute! He falls in love with her and somehow managed to get his confession accepted. Now his relationship is blocked by the titles of 'student and teacher'.

Art not mine, All credit to the artist.

https://www.youtube.com/watch?v=b7Zu_5w13rQ (This is where the pic is from. found it while searching things up on google. Not a fan of the song or anything.)