From Chibi Manga:
Hiyoko's childhood friend, the club's rookie, Iki as well as the kind spectacles guy, Chihiro. The three of them who have been brought up as siblings since they were young. However, when they become high school students, their relationship experienced a little change... Chihiro who have been thinking of Hiyoko since a long time ago, declared to Iki that he likes Hiyoko. That said, Hiyoko's feelings are inclined towards Iki... A love triangle between the three people where their love story intersects each other in a heart-wrenching manner.