●After graduating from high school, Aya suddenly comes to her brother's house. "Let me live here until I find a good place!" and suddenly begins living together with her sister. However, instead of looking for a place, she just spends the whole day lounging around in the room playing games! The angry brother tries to get his sister to leave because he hates her, so he squeezes her defenselessly exposed big breasts! ...But she responds with an unexpected "I'll let you squeeze me as much as you want, so let me stay here a little longer"! The sister becomes horny as her brother's demands escalate!