Misono has a secret that she keeps hidden from everyone - she is the offspring of a yakuza. To conceal her true identity, she enrolled in a prestigious private school and brought her partner, Yuuki, along with her. The two are romantically involved, but their relationship is stuck in a rut due to Yuuki's subservient nature. With Yuuki behaving more like a subordinate than an equal, how can Misono improve their connection?