You can't help but be jealous of Makoto. First his childhood friend wants him to help her with her art project--by posing nude! Then his older sister finds out and she then wants him to... They try to hide it from Mom--but she already knows... Makoto finds himself falling in love with the aloof Mizumura. Could it be she feels the same? Mizumura seems to be fitting in well with Makoto's family, especially when they all go to the hot-springs! Relationships are getting more and more complex for Makoto--or are they just getting better and better?

(issue 1)
3. Aki-nee
4. Mizuhara-san

(issue 2)
5. Onee-chan
6. Motoki-san and Hino-san

(issue 3)
7. Yoshino-sensei
8. Mom

(issue 4)
9. Ikki-kun

(non-issue)
9.5 One Fun Sunday (takes place after issue 4, since Ikki and Mina have met)

(issue 5)
10. Dad
11. Ikki-kun and Aki-nee

(issue 6)
12. Beach Trip

(issue 7)
13. Makoto's Determination

(issue 8)
14. Living Together (With the Family)

(issue 9)
15. Blessing

(non-issue)
15.5 Childhood's End: The Twins' Circumstances (sequel)