It’s a police yaoi shounen ai drama, the first few chapters the pair of police agents go stakeout at a club and ended up doing a couples challenge together where they kissed and ended up rly steamy to win the challenge for some watch, omg pls HELP
I think whats you’re looking for is called “Stakeout”
http://www.mangago.me/read-manga/stakeout/
Omg chapter 82 we got more huge dick bulge in the last panel hehe author keeps teasing the snake in his pants