Blind by the past (Kai Love story)

Kai had a bad past already, He's family disowned him, he got bullied, then something happened on one night where everything crashes down, his girlfriend, Hyerin, Died. Reason? They had a fight because Hyerin saw Kai and a girl talking, Kai was driving he wasn't even looking then BAM!. 3 years later his cousin, Suho, hired a tutor, Since Kai is failing and is a man whore. Then he saw her but not her, Same face and personality, but not the same name. Is Kai really blind by the past? Or will she help him see?