Nijo accidentally witnessed two men have sex at night. The next day, he saw one of the men at his university, Chidori, and learns he is a member of the school staff! Nijo saw both Chidori's face during the day and at night and begins to grow infatuated with his two faces. Nijo starts talking to Chidori at his part-time job and noticed his sexy nature. He finds Chidori's smile intoxicating and can't help but want to see his other faces... 夜の街で偶然、男同士のSEXに遭遇した二条。翌日の大学で抱かれていた方の男を見かけ、彼・千鳥が大学職員だと知る。昼間に大学で見る彼と、夜の街で男に抱かれて喘いでいた彼。二条は、その二面性が気になり始める。バイト先に訪れた千鳥と話すと、妙に色気を感じるし、笑顔が可愛いと思った。もっともっと色んな顔が見たくて、たまらなくなって……。