Former female teacher Natsumi teaches yoga to her instructor Akira. Akira enjoys masturbation and contempt of miko rather than being full of rich limbs that are matured by Natsumi. Natsumi is also inspired by Akira's young body, and becomes enamored by the intense 3P delusion. One night, Natsumi, who was confessed to Akira's feelings, reluctantly pushes her back and asks for a back, which makes her grin.