Jiao​ Sheng Zunzhu Wo Tingting

What happens if you find your enemy cute? Bai Lin, who is the Lord of the Underworld in a cultivation game, was destined to be killed by an evil sword master, until he awakened his free will and decided to fight back. To his surprise, he found that not only was his enemy not evil at all, but he was actually very... cute? But the Lord Of The Underworld won't be fooled by a pretty face! "I must severely punished you in this life, so I'll start by becoming your master!"

(Source: Kuaikan, translated)