I recommend "The Most Freak in the Heavens". This is a fantasy novel. The protagonist transmigrated to become the most monstrous genius. Since he was young, he started to cultivate too fast and created his own legend. This novel has been completed, and the female protagonist also has a school life. The female pig's trotter has been cultivating since she was young, which meets your requirements. I hope you like this fairy's recommendation. Muah ~😗