15-year-old country girl, Suzume Yosano, has to move to Tokyo to live with her uncle due to her father's transfer. She bumps into a mysterious man who ends up taking her to her uncle's place after she gets lost. Turns out, Suzume will be seeing him a lot more often once she starts school because... he's her homeroom teacher!?

Volume 3 contains the oneshot The Second Kiss (セカンドのキス)

The second, sorrowful kiss. She and I are...

Volume 5 contains the oneshot Cookie Girl, Cream Boy (クッキーガール クリームボーイ)

Asuka Fuji, a girl with naturally curly hair, is asked out by Sen Naoki, a first-year fair-skinned boy that she considers too elegant and elite for someone like herself. However, she eventually starts to fall in love with him. Together, they are just like an Oreo; creamy and dark, steady and rough, a rather odd pair but happy nonetheless.

Included in the manga is a oneshot story called Tsuyu Kaoru (A Love Story in Moist Rainy Days) in volume six:

A romantic and melancholic love story behind a red umbrella.