Miki Asou serves as a cashier at the convenience store managed by Yuji Mikage and Satsuki Mine, occupying a position subordinate to Yuji. Her reserved personality manifests as quiet and withdrawn behavior in social situations, masking an underlying kindness. Miki maintains concealed romantic feelings for her supervisor, Yuji. These feelings persist alongside Yuji's own pursuit of a romantic relationship with Satsuki Mine, creating an unresolved emotional triangle. Physically, Miki possesses distinctive long red hair. The narrative includes at least one intimate encounter between Miki and Yuji occurring after work hours, introducing complexity into the central romantic dynamic involving Yuji, Satsuki, and Miki.