XRW-354 My beloved little sister... was taken by a creepy man and ended up turned into a mating-crazed female. あべみかこ

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After their parents died, the brother worked desperately at part-time jobs to support their life, and the sister comforted him with 'playing H' (sexual play). One day, while the brother was away, their uncle visited the house and attacked the sister, Mikako. Threatening her with 'If you obey, no one will have to suffer,' he raped the helpless Mikako, ejaculating inside her (creampie). Afterwards, the uncle trained her to become a mating-obsessed female and tormented her with toys until she reached ecstasy. The brother, who witnessed his sister's depraved state — repeatedly climaxing from the intense sex — ...