Responses
Actually the plot reminds me of Kuroneko Series # 5-12
http://www.mangago.me/home/mangalist/1491/
But instead of the mom, here is brother, the WereLeopard Clan Leader
I just recall, this one is also similar storyline but more against & drama.
http://www.mangago.me/read-manga/brilli/
Does anyone know a yaoi that follows the same story line as Ookami wo Karu Housoku