I met him on a meetup site wanting money… Not knowing he was my brother when we first met, I viewed him more as a person of the opposite sex, making our relationship not so easy to end… Suddenly we ended up living together, he makes me succumb to pleasure as he assaults me in my sleep… In exchange, I demand money from him, making our relationship very distorted… But, his young sex drive meant him not showing moderation, and me ending up stuffing my cheeks with his raging member in the school’s toilet… I’m filled by him in an empty classroom… I have to end this relationship with him that causes my body to writhe in ecstasy as I fall into sweet pleasure…

Ooki Ryuuji used to have someone he liked. That person ended up marrying his brother and giving birth to a child. His feelings distorted with time as he buried them deep within his heart. Rinka, the child of his brother, came to him after she ran away from home. She has such a nice face… She grew up to be just as pretty as her mother. Reaching puberty, she’s gained volume in her breasts and thighs that show through her sailor uniform. The feelings in Ryuuji resurface seeing Rinka who resembles her mother so much. His logical side completely breaks down after coincidentally finding an aphrodisiac. “I have known this girl since she was born. She looks just like the girl I liked and has a really nice, mature body… I can tell that I won’t be able to hold myself back for long.”

Starting with a lewd dream about his 5 sisters in compromising positions, our protagonist’s life is about to level up! While his parents are away on a trip for a month he is assaulted by his youngest and oldest sister’s sexual desires, his dream starts to become a reality…