Chaotic Affection

A Scientist on the Asian continent is on the edge of conquering interdimensional travel when she mets a demon on the other side of one of the trials. With no where to go, she takes him home as a roomate. Meanwhile, in America, four teens are being trained for battle not knowing th threat already arrived in their dimension and is in someone's home.

Will they be strong enough to beat him or will something else take over?