Teshio ni Kaketa Musume ga Ore no Ko ja Nai to Hanmei Shita node

"If she's not my daughter... then it's fine if I fuck her..."
The DNA results came back, and they revealed his wife's betrayal dating back to decades ago. From that moment on, that girl was no longer his daughter, just a hot young piece of ass.
* This is a work of fiction. It contains no relation to actual persons, organizations or events.
(Source: DLsite)
Note: Originally released as a full color doujinshi, later split into 7 parts and published by KATTS under its Aigan Jikkenshitsu label. A live-action AV adaptation (SSNI-954) was released on January 7th, 2021.