[Amuai Okashi Seisakusho (Hiiragi Popura, Ochita Ato Daisuki Samurai)] I'm (♂) His Little Sister Slave

An anxious young woman with twintails is suddenly confronted by her brother, who declares she must become his slave, her body already trembling under his grip. The tension escalates as she is forced into a degrading contest of strength and then stripped to reveal her exposed, trembling form, while he taunts her with cruel words and a promise to finish her off. The scene culminates in an intense, mind‑breaking encounter where she is made to submit completely, her pleas turning into a twisted confession of love.