Kyou, Koshiba Aoi ni Aetara. - Vol. 1 Ch. 3 - I Want to Get to Know You (Part 1)

[MangaDex]

 

[Machaka22]

Adolescence

 

[Serenata]

I ship the teacherssss

 

[Pachka84]

The dark-haired love interest has a melancholy secret. Congratulations, nutcase. That's another boring trope to cross of the list. Yeah... That ending is nice, but it won't be her