I'm an introverted loner, but I'm actually a martial arts master. When I saved my beautiful teacher from delinquents, she started living with me and showering me with affection.

Introverted high school student Taida Shinji saves his beautiful teacher Saionji Akari from delinquents attacking her on a dark street. Shinji is a master of martial arts and quickly defeats all the thugs. Though Shinji tries to stay inconspicuous, Akari notices that he is both strong and kind. Akari, who is naturally dependent by nature, takes advantage of their proximity and invites Shinji to her home out of loneliness. There, Shinji is showered with Akari's love, treated to her home-cooked meals, and ends up staying over. As the two begin living in a semi-cohabitation state, they develop a forbidden relationship that is not permitted between a teacher and student...!?