Sensei, Would You Still See Me If I Had Black Hair?

Sensei, Would You Still See Me If I Had Black Hair? summary:

Kosugi Naomi is an unremarkable girl in all aspects, but she sports blonde hair that invites the wrath of her HR teacher, Hoshida Ryuuhei, a large and rough guy who often threatens to beat up his students. But Naomi takes in all of Hoshida sensei's yelling and threats with a smile and seems to invite more with her actions.