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Stepmother’s Sin episode 1

Yusuke Yagami, a third-year student, had sex with his cousin Mio Shinohara. The two have been friends since they were young and can talk about anything. However, they do not have romantic feelings, they satisfy each other’s sexual desires. Yusuke doesn’t have good feelings for women, aside from sex. It was caused by an event in my childhood.

Yusuke’s parents divorced when he was still young. It’s because of his mother’s affair. Moreover, he directly witnessed the flirtation scene of his mother. From that time on, his mother changed from the most believable beloved to a hateful traitor 180 times. And it became a feeling for women’s things. Except for Mio … One day, Yusuke is introduced to a strange mother by his father.