The hikikomori 'Mei' is sexually abused by her brother-in-law on a daily basis. "I went shopping for you, Mei-chan." Her brother, who smiles humbly and acts kindly, always demands something in return. "Since I did the errand for you, make my dick feel good..." He rubs his hardened crotch against Mei as he becomes aroused. He intends to stay in her room until he ejaculates. Everything becomes troublesome, and Mei accepts her brother's demand. However, her brother-in-law's sexual desires gradually spiral out of control...
