Nanjou is a divorced father with a child, Chiharu. Chiharu's teacher from the childcare center, Aiba, ends up staying later at the Nanjou family's place to take care of Chiharu as his 'mom.' How does the relationship between Nanjou and Aiba progress?

As Chiharu grows up, he becomes best friends with Satoshi, another child from the childcare center. However, when his first love is unrequited, how do things between Satoshi and him change?

Included one-shot:
Otome Danshi no Houkago Lesson (Girlish Boy After School Lesson)

After a nice get-together party with guys from his university, Atsuhiro wasn’t expecting to wake up naked the very next morning with a used condom around him. To make matters worst, he couldn’t remember a damn thing! Armed with only the recollection of a naked, flat chested body, Atsuhiro is determined to get down to the bottom of this and enlisted the help of his good friend, Makoto.