Shinsaku is the errand-boy of Ouka and Asami. He gives them massages, goes shopping, does their homework etc.
He can never resist them. But he is a bit happy because they are beautiful. One day, Shinsaku is ordered to come to an empty classroom by Ouka and Asami. There is Anju, his classmate, and he is forced to have sex with her...This event leads him to a life full of confusion, perversion and insanity...

[Edited from ErogeShop]