SAME-186 After Mom Remarried, I Got a Bratty Stepsister with Massive Tits, a Filthy Mouth, and No Respect—Though I Hate Her, Her Face Is Super Cute. After I Fucked Her, She Turned into a Brother-Obsessed Nympho. Amiri Saito

The story follows the male protagonist whose mother remarries, bringing a stepsister into the family whom he both loves and hates. She has a fiery figure, a sharp-tongued mouth, and a brash personality—annoying in character, yet irresistibly cute in appearance. Initially, the protagonist despises her, but as they spend more time together, their relationship gradually evolves. After an accidental intimate encounter, they become intimate. From then on, the stepsister develops an intense brother complex, becoming unusually clingy and obsessed. The narrative revolves around their taboo sibling romance, filled with passion and conflict.