The Prince's Plaything

Yeonjun is a prince who is in line for the throne. He is a troublemaker and hates everyone picked for him to marry. He also is known for stealing and breaking the law. He doesn't get punished because of his status and he loves it. He wants to be king so he can do whatever he wants but he needs a wife. It's not that he doesn't want a wife he does.
He's a yandere and no one understands his love and how he shows it.
After having his guards kill his newest love who tried to run away from him he falls into a depression and one day he decides to go into town to steal something and he finds Taehyun and he decides that he can't let him go so Yeonjun gets his father to kidnap Taehyun for him and take him to the castle.