[SDMF-052] My younger brother who didn’t even graduate middle school became a shut-in Otaku who doesn’t even work part-time because I spoil him with masturbation. Shizuka

Shizuka’s brother is in a dark place and he has become a hikikomori, avoiding any social contact, job, or friends.

His parents abandoned him long ago, considering him a lost cause, but his sister Shizuka is very devoted to him, even aiding him with his sexual needs.

But who knows if, instead of helping, she is actually the cause of his mental health decline?…