The Simple Life of Killing Demons - Chapter 13Book 3:

Zeus, Hades, Poseidon, and many others—every human has the blood of gods running through their veins, it decides their fate. But Rhys, ever since he was born, showed absolutely no abilities. But at the age of 18, when his world had given up on him, the blood that remained dormant in his veins finally awakened……The Blood of Eros, the God of Love, Desire…and Coitus.

And so Arascus, God of Pride, waited. He waited for his defeat as the forces of Heaven & Hell combined descended upon him. He waited as they tried to kill him. He waited as they locked him away. He waited for a thousand years in that dark prison.

The celestial celestial beings who lived for more than 100,000 years were born and reborn in a small monk in a human world.
His motto: “It’s not as good as a medicinal medicine for ten years of hard work.” “Even if you practice a copper-iron bone, it’s not enough for my soldier’s attack.”

- Description from Novelupdates

Xia Yuqing is a shut-in+fujoshi from the 21st century. After an accident, she transmigrates into the body of a young princess forced into a political marriage to another country.