While hiding big thought in a small chest…. A favorite person may not be continued supporting; and…The Koto which I continue supporting may not be happy. While 《 Nana 》 and 《 Hikari 》 between lovers going to the same girls' school train itself intensively for a district meeting of the track and field club to belong to together hard. The relations of such two people change in a stronger bond triggered by Worry of 《 Hikari 》 which I confided to ,《 Nana 》 and deepen little by little…. Story of the small Ren of girls of such a small chest, all five parts.
