"Sister Breeder" is a twisted hentai OVA (2025) based on Takeda Hiromitsu's manga, produced by studio T-Rex. The story centers on Shota, a teenager with a severe "sister complex," who sexually coercively dominates his beautiful step-sisters Rena and Aina while their parents are away, spiraling playful harassment into full incestuous domination. The series features hardcore taboo content including coercion, NTR, and explicit scenes, targeting fans of boundary-smashing smut.