Based on the erotic game by Bishop.

Kengo Ishizuka, a teacher at Aozaka Academy, has a secret life of training girls he likes into slaves of his choice. The girl he has chosen as his target is Saki, a beautiful girl who excels both in public and private. As he conducts research to turn her into a slave, he discovers that she is actually his daughter. Feeling abnormally excited by this strange fate, Kengo calls Saki and takes her virginity. He then takes photos of her with a creampie, threatens her, and begins training her, but...

(Source: Parabook, translated)