Min joon, is a 57 year old Korean man. He is the grandfather of sae woo and he is a very intimidating one. He is rude and scary to everyone but his granddaughter, saw woo. He loves her. Which means he supports her and is there to help her, but if she finds out his biggest secret. He'll lock her up. He'll be mean no matter how much it pains him too. He also stalks sae when she's not around him. And even though she doesn't live with him, she has her own room at his house. Min is rich.