"I bet you were expecting this." My mind and body are under the control of a sadistic teacher and I can't disobey any of his orders......! A boy used to bully Mayu when she was a kid. She wanted to enjoy her school days, but the first friends she made happened to be naughty girls. One day, they decide to threaten their teacher Hasegawa with a made-up affair with a female student because he told off one of them. Mayu can't say no when her friends ask her to seduce him... and it turns out that he's the boy who used to bully her......!