Eternal Covenant
Ian (uke) born in the country of Derwin with immense amount of magic. When he was young he was outcasted, bullied and called a monster due to his magic. Until one day his magic overflowed and exploded harming many people, so a priest took Ian in and raised him and he became a knight of the church. Although the priest seemed nice he was actually controlling and surpressing Ian’s power for his own good, but Ian doesn’t know this and doesn’t want to believe that his savior is a bad person. Ian was trying to solve a human trafficking case and killed a noble man in Derwin who was responsible for it. But he was caught by Soh, king of the neighboring country Archaia, who was under disguised bc he was on a personal mission to see who was spreading rumors about him wanting to start a was with Derwin. It was the first time Ian had met someone who had the same power as him, and that was Soh. Although Soh kind of blackmailed Ian that he would expose Ian to the priest that he had killed, someone, Soh took good care of Ian, taught him about magic and raise his self-esteem (and fell inlove with him). Later it seems like Soh wants to take Ian back with him and away from the evil priest, and that is where the main conflict begins.
Your Majesty, Please Don't Kill Me Again