This story intrigues me because it's mpreg (pope x emperor), but to be honest, those characters aren't that interesting. I'm more interested in the main character's brother, the duke. He looks like Gilgamesh and is very handsome! I like his personality, and according to spoilers, he also has some relationship with the long brown-haired guy!
https://toonkor367.com/%EC%98%A4%EB%A7%8C%ED%95%9C_%EC%98%A4%ED%86%A0_1%EC%84%B8_37%ED%99%94.html
Arrogant otto the 1st