Help finding Yaoi manga

The basic description is that it revolves around two brothers/cousins who are involved with a kimono shop. I can't remember the lead couple that well, but the other brother/cousin (I think he was blonde?) makes a design that a mafia-esque guy likes. I think the Kimono was like a demon/black look. They have a love/hate thing going on

let me know if there are any ideas?

Thanks!