Heeelp

It was a detective, mystery kind of yaoi manga. The uke is a detective and wants to capture the criminal who’s surname is something like "20 faces" because he never got caught thanks to his disguise. One day, uke meets a weird guy who lost his memories and thus, doesn’t know who he is, so he asks uke for help. That man is the seme and he looks very suspicious. I think seme had long hair but I’m not sure. I also remember a scene where they both went to a sort of "club" where ppl do illegal things like drugs but also sex and uke almost got raped but is saved by seme.

And one last thing is that their name are based on fictional characters from an old detective novel I think. One of the guy was called Akechi and is uke’s mentor I think.

Thanks in advance!