Utsuro no Houkago

Mononobe Kouga, a high school student who spends his days fighting, has been able to see non-humans since he was a child. As he grew older, he was able to make physical contact with them, and this "thing" caught Kouga's eye, putting him in a desperate situation, but a stranger came to his rescue. Kouga was suspicious, but when he asked for help, the man suddenly kissed him, saying that he was trying to exorcise the spirit...!? A BL series about a mysterious, nihilistic exorcist and a tough-looking yankii with a mediumistic personality begins!

(Source: Julian Publishing, machine translated)