Sister Breeder is a hentai anime adaptation of the manga Sister Breeder by its original author.
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OVA 1
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Shota is very attached to his sisters Rene and Aina. Every day, he becomes more and more attached to Aina... and eventually he even sneaks into her room at night!
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Rena tries to stop Shota, but ends up having sex with him instead of Aina.
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Due to her hidden feelings for Shota and the pleasure of new sensations, the once innocent Rena gradually becomes addicted to sex...!?
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OVA 2
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\"I want you to fuck me like my older sister!”
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Aina discovers that her older sister Rena has become her brother Shota\'s sex toy. Unable to bear it, she sneaks into Shota\'s room at night...!?
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Using the lewd techniques she learned by secretly watching him with Rena, Aina tries to take the initiative—but as she experiences pleasure, Aina\'s arousal only grows!
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Along with her sister Rena, Aina also gradually undergoes training and becomes a sex slave...!
