The protagonist (Default Hiura Hagiuda) is a college student who has lived in his apartment for 8 years. His next door neighbor is the pretty 10 year old 4th grade elementary school student Shion. Every day Shion comes home to an empty apartment so the protagonist offers to let her come to his apartment to play for three hours each day.

She absolutely must keep it a secret from her mother though because the games they play include "Licking strawberry jam from your tiny breasts" "Watching television while playing with your pussy" "Try to make peace signs to a video camera during raw sex" "Try not to pee in the bathtub while being cummed inside" and more!