Kanoko is a sister who loves her brother. In reality, she is a perverted girl with a secret account. She secretly seduces her brother by showing him how much she loves him. The brother can't help himself and makes a move on his sister, even though they are family. What's more, the moans that come out of the mouth of his sister, who has such a cute anime voice, are unimaginable. Having crossed the line, the two can't stop themselves, and they make love all day long while their parents are away.