His virgin brother, who took his sister's provocation seriously, is not aware that he is cumming and runs wild.

Eimi teases her unpopular little brother as a joke. The virgin brother, who took the joke seriously and mistakenly thought he was tempted to him, immediately inserts his dick into his sister as soon as his parents left. Eimi has reached an orgasm due to the overwhelming momentum, but her younger brother, who is not used to women, does not notice and ignores her and continues to shake her hips in a slut. Even after climaxing, she orgasms repeatedly with the pleasure of the thrusts, and her resistance continues to vanish until her parents return home.