Otomedori Vol. 1: Rondo of Purity Kazuki Okino is an ordinary student. Although his daily life is somewhat boisterous, he finds modest happiness in it—thanks to the presence of two women. One is his younger sister, Rinka; she is mischievous and often gives him a hard time, yet she adores him. The other is his childhood friend, Otome Sakuragi. She is a year older than him and constantly looks after him. Beautiful and shapely, she is the object of admiration for the boys at school. Otome’s attentiveness has become an integral part of Kazuki’s life. Even without his sister pointing it out, they look for all the world like a newlywed couple. They share a mutual affection, yet neither has ever confessed their feelings, and they aren't officially dating. Their relationship hasn't quite crossed the line from childhood friends to lovers, but Kazuki assumes that, in time, they will become a couple and eventually marry. All he has to do is wait for that happiness—lying just beyond the horizon—to come to him... But that gentle happiness is shattered by a single DVD sent to Kazuki...