Both the are female teacher and her student... but you are engaged!?

Nano is a popular teacher that's admired by students. Only Souji, men student, gives her trouble. Some day, someone she knows introduced her with an arranged marriage. Nano is anxious at first, but later becomes frank using the man who she meets which is in a good mood. Later, she realized he is Souji who disguised as someone else! Though she rejects the arranged marriage, Souji still relates to pursuit her.

 

Added 12 series