VN Ren'Py Kidnapped by the Mistress

Kidnapped by the Mistress by Isvrat opens with you and your sister kidnapped by Mary, a strange cute girl with sadistic tendencies. She grew up in a family where kidnapping is normal, but this is her first solo case. Mary wants you both as pets. You can't stop her, but answer choices accumulate slave/resist/masculinity/love points that affect the route.

Built in Ren'Py with multiple endings, trap routes for sissification-adjacent paths, and incest lines for the sister, the game runs BDSM and drugs through escalation chapters.

Expect 3dcg, animated, BDSM, corruption, drugs, female domination, futa/trans, handjob, humiliation, incest, lesbian, male protagonist, mobile-game UX, multiple endings, rape, slave and trap content threaded into a kidnapping-as-coming-of-age story for Mary where her victims double as her training.