At the Beginning, He Was Sold to the Villain Empress by the Demon Emperor's Mother.

[System+cheap villain+book-wearing+relaxation+old six+no moral integrity] Lu Feng traveled through time in his own book and became the son of the Jade Rabbit Demon King. His father was a human, which made him look like a human and a rabbit. Well... Just like the rabbit you thought. Fortunately, he awakened the strongest title system. Title: One punch to surpass the rabbit, unlock the body limiter, and as long as you are still exercising, you can infinitely improve your physical body. (Requirements for unlocking the title: 100 push-ups, 100 sit-ups, 100 squats, and 10-kilometer long-distance running every day for three years) Title: Social Rabbit, proficient in various languages, and easy to win the favor of strangers. (Unlock condition: piss a person to death through words.) Title: Blackened Rabbit, Blackened Rabbit is ten times stronger. (Unlocking conditions: let yourself feel the pain, the death of your whole family, the betrayal of relatives and friends, being cuckolded by your girlfriend, or killing a child of luck!) Lu Feng: "..." Title: Supreme Rabbit, born supreme, invincible at the same level. (Unlocking condition: dig out one of your own ribs) Lu Feng: "..." Title: Yellow Emperor Rabbit, Queen of Three Thousand, soaring in the daytime. (Unlocking condition: Tease the heartstrings of three thousand women) After reading this, Lu was silent, and it took him a while before he suddenly realized, "The system is asking me to atone for my sins. I deserve to die. I wrote so many miserable female characters just to make money. Don't worry, I will never let you suffer the pain of the original plot again!" Unexpectedly, as soon as he made such an ambitious goal, his mother sold him to the villain empress, the final boss of this book...