I thought this chap was the uke dreaming .... but ... bah? So now the seme is rich? Well

Nah*

imma take a wild guess and assume his father had connections/dealings with the yakuza b4 his death and someone from the group stayed in touch with the seme pretty loosely by sending him to an orphanage that was near their turf? so now he might be a potential strong head in their gang idk

Oh, yeah that seams possible