[FNS-176]

I became the masturbation material of my girlfriend's big-breasted, unpopular NEET older sister, Hachimitsu Rin.

The older sister I occasionally meet at my girlfriend's house is a shut-in who looks like the poster child for gloomy introverts, always giving me a sullen glare. We were only on greeting terms, but one day I accidentally witnessed her masturbating. I got fully erect at the erotic body of the older sister who usually wears plain clothes—huge breasts, a slim waist, and a huge ass! From that day on, we became mutual masturbation partners in secret from my girlfriend.

Unexpectedly... Contrary to expectations, the content was quite standard. The actress's beauty was impeccable, and the visual quality was high. However, overall it lacked surprise and originality, and I felt that a bit more ingenuity in the direction and situations would have been desirable. When you give a dick that shouldn't be given to a person who shouldn't receive it lol His older sister is a shut-in loser living in a filthy room, wearing black-rimmed glasses, but her bare face is beautiful and she has big breasts—the gap is irresistible. Triggered by a certain incident, when his relationship with her and her older sister begins, the previously gloomy sister awakens to eroticism and transforms into a charming beauty who even offers a 75-minute paizuri service. In the end, she sneaks into the bedroom where he's sleeping with her, and even initiates sex that steals the younger sister away—she becomes a beloved beauty awakened to sex, so much so that it's laughable.