MTL - Ask Sword - Chapter 565 black blood

What would you do if your planet ceased to exist after a nap?

Bai Muchen had it all — not only was he the most renowned martial artist of the Nine Heaven continent, he even had the Five Meridians of Tianling and was engaged to Xuan Qingzhu, the beautiful daughter of his mentor. But everything falls apart when he’s set up by his fiancé and mentor during a cultivation session, and he is killed.

Reborn as a young man named Xiang Nan, the heir of a declining family, can Bai Muchen get his revenge?

After his girlfriend broke up with him, wandering all over the place, Xia Tian happens to see a girl about to be hit, after he saves her, he ends on the hospital. Now thanks to his accident Xia Tian awakened the ability to see through anything, be it weak points, or through clothing, nothing escapes his eye. Especially girls.

- Description from novelupdates

The formless ancient world was infested with despicable demons. They hunted and feasted on mankind, keeping the human civilization constantly in a weak and suppressed state.