The hidden red sun (ON HIATUS)

Yoriichi is a demon slayer. The strongest of them all, he created the first-ever breathing style called Sun breathing, he had created the water, thunder, fire, and wind breathing styles derived from the sun breathing

But he had a weakness, he is an omega.

Being an omega isn't really a problem in his work. In fact, it made his skills even more incredible. Omegas are naturally protective, sensitive, and nimble, but his weakness lies in the heat that all omegas have.

Muzan Kibutsuji is a demon, the strongest and the oldest there is. He became a demon after using the prescription that a mysterious doctor gave him, he became stronger, yet he cannot walk in the sun. In a fit of rage, he killed the doctor. He spread his kind to find the blue spider lily or to find a demon that can walk in the sun.

Then he met Yoriichi, he was almost killed. He knew that he could not defeat him, so he opted for a way that Yoriichi won't kill him. Mating and creating a bond.

He had made the perfect hybrid from his and Yoriichi's blood. A half-demon that can walk in the orange sun. A red sun.

This is an adaptation of the story 'the black sun' by RulerOfTheCosmos link: https://archiveofourown.org/works/25701421

ON HIATUS!!!