Pls help me find the title

Pls can you help me find the name of this yaoi, the seme is a rich kid and he meet the uke in college and they got together but like the seme family is against their relationship so his uncle and cousin kidnapped the uke and send a letter telling him they broke up, after that sometimes past and like the seme go to his sister and try to convince her to help him found his lover, so she decided ot help him but their is a condition he need to give up on the company and like they murder their father and uncle so the sister can have the company