A serious/studious looking person with genital piercings? Bl, gl or straight. If you rec something straight then it's a bonus if the woman has the piercing
Only one I know is this one, but he doesn't look studious and he also removes it:
https://www.mangago.zone/read-manga/first_call_1_the_virgin_surgeon_is_about_to_be_married_to_a_young_yakuza/ (BL, the top has the piercing)
Also, I think maybe this one, but I'm not 100% sure:
https://www.mangago.zone/read-manga/sugar_trap/ (BL, the top has the piercing? I don't remember, sorry if I'm wrong and wasted your time lol)
Damn, my first theory about none of them being NPCs except one of them was so close. But as it turns out it's just none of them that are NPCs at all!
Also, idk why I thought that's how bada looked fr (even though I knew it must not be his real name) but I guess it's just one of the character options and he doesn't actually look like that lmfao. I wonder how bada and Doha will recognise each other irl
Also I don't think this disproves my theory that Doha is (was?) in league with the killer. Since there are set character options, it's possible that the game also assigns tasks to specific characters. And that Doha was actually assigned by the game to be an imposter. That's why he's the only one that can kill the killer
Ooooooo that’s interesting! Very cool!