Pervert seme

Do you mean sign language?
http://www.mangago.me/read-manga/sign_language/?av=5

As in other yaoi manga

Ohhhh...
Then have you read this one: http://www.mangago.me/read-manga/nibiiro_musica/
I mean it’s not exactly what you asked for but I thought it was kinda related??? Actually now that I think about it, this has nothing to do with what you asked for but this manga came to my head

thanks for the recommendation

http://www.mangago.me/read-manga/punch_up/
http://www.mangago.me/read-manga/kuroneko_kareshi_no_asobikata/