#1 Ayumu Sakura and Hiro Oikawa are classmates and childhood friends. Ayumu's always had feelings for Hiro, but she's never had the courage to tell him. Hiro's always thought Ayumu was cute, but he thinks of her more like a little sister. When they were young, they were always together, but these days their friendship has settled at a casual distance.
#2 Itsuki is a member of the art club, which has been too short on members for years to operate properly. When what other members it does have graduate one spring, leaving Itsuki alone, he decides to quit and let the club die with his departure. Until, that is, Otoha turns up to join. Itsuki can't just abandon this new student, but he figures that she'll probably stop coming before long, so he decides to stick it out for just a little longer.