Luna moved to Tokyo for a summer course at a preparatory school and decided to live alone in a private lodging. However, when he arrives at the site, he finds a large amount of garbage scattered in front of his neighbor's door. A dirty room with a pile of garbage ... Hearing Luna say out loud about the smell of garbage, Onii gets upset and kidnaps Luna. Luna's delicate body that resists cannot compete with the power of her dirty brother trained by continuous ejaculation masturbation, and her mind and body are dominated by her abnormal propensity.