高校二年生・広井玉緒は元野球部員。ある日帰宅すると、誰もいない筈の自室から吐息が漏れていた。ソフトボール部の4番でエース、学年イチの美少女である穂村蘭。彼女が玉緒の名を呼びながら、夢中で自身を慰めていて───。『高嶺のハナさん』の著者が描く、“主従の青春”ラブストーリー!!
Having forgotten his keys, Tamao Hiroi a high-school student, returns home using the back entrance and is surprised to find a stranger in his bed. Soon he realizes this is no stranger but Ran Homura, one year younger, softball ace and one of the most beautiful girls at school! Hiroi watches her masturbating on his bed and instinctively does the same peeking through the glass door. He is soon found out though and a strange ‘master/slave’ relationship begins.