My Highness Hears My Thoughts, And Still Plays Along - Chapter 365 - 346:

In this world, mastering runes is the key to becoming a cultivator. The ability to control these runes depends on the development of one’s Brain Domain. The more advanced the Brain Domain, the quicker and more precise the rune control, determining one’s potential as a cultivator.He was a boy from the slums with slim chances of rising above his station. Despite knowing his limitations, he worked tirelessly, driven by his dream and gratitude towards a childhood friend who helped him secure a spot in a prestigious high school. However, with a less developed Brain Domain, his prospects for further education and becoming a cultivator were bleak. His hard work seemed in vain when, six months before the crucial entrance exam, the girl he cherished rejected him, claiming their worlds were too different for their paths to cross again.But then, everything changed when he found himself engulfed in a mysterious ocean of golden runes!

The protagonist, Winnie (文尼), confesses his love to his childhood friend—the princess he’s been secretly in love with for years—but is brutally rejected in public. His heart shatters, he’s humiliated and ridiculed, and he collapses unconscious. When he wakes up, he vaguely remembers his past life’s memories and realizes he has transmigrated into the world of an otome game he played before. At first, he’s thrilled, thinking, “Nice! I must have been reincarnated as a villainous side character who disrupts the protagonist’s romance, right?” But then… surprise! He’s not just the villain—he’s the “Saintess”!

He is the emperor of the business world. Rumor has it that he was fond of men and because of this, Song Wen Xin agreed to marry him.

After their marriage, he proved to her that he has the ability of a normal man!

“You are not allowed to hide when fulfilling the obligation of husband and wife. You are also not allowed to refuse the gifts that I send you. And, when you take the initiative to come to me… you are not allowed to stop!” He ordered her overbearingly.

Song Wen Xin immediately said: “In your dreams!”

He laughed enigmatically: “What a coincidence! I’m best at making a dream into a reality!”

He dotes on her, dotes on her with no bottom line at all…

- Description from Novelupdates

This story is centered around the man named Yi Ji-Hyuk, who has spent 1000 years in a Medieval Western fantasy-like world before returning back to the modern-day Earth. When he returns, he finds that his home is facing monster threats, and that humans with superpowers have appeared to protect the innocent people of Earth.