To restore world order, the snake and turtle must unite as Black Tortoise. In a world overrun by demons, Sae-hyeon and Yeong-mu strive to awaken as Black Tortoise.
Sae-hyeon proposes sex for their awakening, but Yeong-mu responds with disgust.

"How can two men have sex? That's disgusting. We'll handle it ourselves, so stop."
Sae-hyeon leaves his unrequited love and decides to awaken alone.

Eight years later, they reunite as adults...

"Back then, you begged me to fuck you because it was the fastest way to become the Black Tortoise. Can't do it now?"
"Didn't you say sex should be between people who like each other?"
"That's what I used to think, but my view has changed. I don't need to treat sex as something so serious anymore."

Can Sae-hyeon, who still loves Yeong-mu, be satisfied with just a casual relationship?

Original Novel:
Ridibooks, MrBlue

Official Translations:
English