Itsuki is totally happy with his life. He enjoys a deep and intense relationship filled with pleasure and love with his boyfriend, Airi. If there's one thing Itsuki's worried about, it's probably the fact that Airi and their teacher, Yuichi Shibasaki, are brothers on bad terms with each other. He wishes they would get along. That is, until one day he notices that Airi's gaze drifting away from himself to someone else... What is love? What's causing these painful emotions...? A bittersweet love story weaved by a confused classmate and his cute boyfriend.