“Sc-screw you. Are you listening, Onii-chan!?” To Yukimasa who is being bullied, Miyako treats him coldly by saying “You getting bullied causes me trouble. Knock it off.” Missing her chance to get married, Miyako’s body is now exposed to humiliation. “Aren’t you a cute little girl, making your teacher call you Onii-chan,” says Miyako as she refuses to listen to Yukimasa. “Ruka, you’re so pretty…” Succeeding in running away from Yukimasa, Suzune and Ruka rest their body and mind by bathing. Under the lamp light, the two draw close to one another, so close that their lips are close to touching… But, the two had no way of knowing that moment would be the prelude to the tragedy about to occur…

Our protagonist is a teacher of a small class of girls. One day he gave the girls a snack, but that snack ended up having some HUGE effects! They grew up! They behave just as they did before, despite their voluptuous bodies… Our protagonist has started groping and sucking their tits while feigning it to be just a massage… Eventually the other girls get involved….