Introvert's Pet

A story about Billionaire Man so cruel and heart stone. The richest man in whole Europe who own the Cabillion Company and 19 Cabillion Hotel and Casinos. He is an introvert but the silent bad guy one. Who in love to Rosian Gabica aka the shy type, the sensitive and soft hearted woman who will become the assistant of Demonic attitude of Mr. Gabriel Cabillion. what will happened of these two? The Demon and the Angel? Are they attract?