Fifteen was a man who had a personal misunderstanding. He encountered a career crisis within two months of entering the industry.
Someone forcibly cast a soul-binding spell in the underworld, and the person who cast the spell was actually the target of his own sword.
So he was forced to start a journey with this handsome target to solve crimes and eliminate evil, and in the end he was actually confessed to her.
(It's the first time in my life that I've opened a trap. The female protagonist is definitely not a novice, and the male protagonist is also very smart. How can I put it, what I see is a destined person.)