Twin Sister Android's Sexual Social Contribution

A sci-fi adult visual novel set in the near future. Two android sisters—Nina (emotionally reserved and polite) and Rio (energetic and affectionate)—were manufactured for household chores but prove completely useless at domestic tasks. After discovering erotic manga on a discarded smartphone, they learn about human sexuality and decide their way to contribute to humanity is through sexual acts. The game follows their encounters with various men as they seduce and engage in increasingly explicit sexual scenarios. Gameplay is minimal; you navigate the story by approaching men in the street and triggering events. The narrative is divided into two acts: the first focuses on teasing and exhibitionism, while the second depicts the androids fully applying their newfound knowledge. There are no serious or violent elements—the tone remains lighthearted and comedic throughout.