I, The Invincible Villain Master With My Apprentices

Shen Shi was very disappointed when he transmigrated into the book he wrote and didn't even end up as the protagonist. He also didn’t understand why the invincible hero became a girl? Even worse, why did all his apprentices want to become his wife instead! The protagonist asked him, “Master! Would you like to take me right now? Or do I have to kill off the other apprentices first before you'll have me?”