Sacrificing herself for adultery and rape, she absolutely couldn't let her younger brother become a sex offender... A sister who kept it a secret from her parents and allowed her brother to continue assaulting her—a self-sacrificing act. (Tsukino Emi RLMP-006)

High school girl Midori and her ailing mother raise her younger brother, who is unable to live alone. Her brother begins to develop an interest in girls' bodies, and news reports on television highlight the rise in sex crimes… She absolutely cannot let her brother become a sex offender. To protect the family's peace, she secretly offers herself as an outlet for her sexual desires, hiding it from her parents. With her breasts, her mouth, her vagina… She sacrifices herself for her brother, but things only get worse… A sister's sacrifice, yearning for a "normal life" with a smile. Yet, with each rape, her heart crumbles little by little… Is this really okay…?