help please!

hello i am currently in search of yaoi that i read some time ago! the general story is of a yakuza heir (idk if that’s the correct term tbh) & a very beautiful crossdresser. they don’t get along at first but eventually they end up falling in love. i know it’s a spin-off of another series, but i can’t remember the name or the author of it :( i really enjoyed it because of the dynamic between the two leads, & because it was the crossdresser who eventually ended up being the seme. if anyone know what yaoi this is, please tell me!