Onegaii~!

I actually looking for a yaoi manga that I have read like 3 years ago and I actually forgotten the title T^T... It's about 2 guys(well duh) they both have snake tattoos on the back, the seme wasa a yakuza and he had a black snake and the uke (i forgot his job) had a white snake. When the uke was pissed off he suddenly became violent and he was the cause of the seme's scar on his face. Oh maii gadd~!! I wanna read it back!! If anyone know this one please do tell me~!