Doujin Fever!! Affection!

A 2D adult simulator featuring customizable sexual scenarios. You and your step-sister Rin are alone at home, and she desires you sexually. The game offers two perspective modes (POV and standard), character appearance customization (hair, clothes, underwear), and animated sexual content including vaginal, anal, and oral scenes. Features smooth Spine2D animation at 1280p/60fps and includes voice acting. The project is developer-canceled but functionally complete for all sex scenes.