[FNS-229]

A younger sister who, after being used as a tit-fuck masturbation toy by her hikikomori older brother riding on top of her with a tit-job, awakens to the pleasure of being a sexual outlet. Sonoka Misaki

"Once upon a time, you were so kind..." Sonoka, the younger sister, supports her older brother who has become a shut-in and let himself go. One day, when she brings him a meal, she's forcibly dragged into his room and forced to offer her G-cup breasts to her brother's desires. Ignoring her screams, he gropes her breasts and covers them with his sperm. Still, wanting to protect her brother's place in the world, she chooses to live as "her brother's personal tit fuck toy." Amidst the daily cycle of creampies and tit jobs, her brother begins to leave his room, driven by his craving for her breasts. Even in this twisted form, it's her hope for his rehabilitation. She stops resisting and dutifully accepts his sexual use. A sad yet lewd story of sibling codependency.