EBOD-776 Kanon Kinofuki as a rebellious stepsister takes raw creampies from her stepbrother while parents are away

Kanon lives with her father, and when he remarries, her new stepbrother moves in, and she resents him, often showing her frustration. He catches her masturbating in her room, and uses that knowledge to pressure her into sex, which she resists at first but then climaxes despite herself. The two are alone for three days while their parents are away.