I'm looking for a yaoi/shounen ai manga. The story goes like this: The uke and seme are fr...

I'm looking for a yaoi/shounen ai manga. The story goes like this: The uke and seme are friends still in school, they're strong and always get into fights. Then one day the seme goes out with a girl and I think she was part of the yakuza but in the end they still get back together. I also remember they had some sort of nickname like dragon and tiger or something