The are two worlds; The Angel World, or better known as Akoth, or the Demon World, better known as Trath.

Liam was the devil's son and prince of Trath, the heir to the throne. He was known for how scary and powerful he was, but yet for some reason he was always sweet and kind to you.

Liam was currently hiding in your room and talking to you (he's hiding cause he's a demon and your an angel and he's not supposed to trespass in angel territory)