Min-Hyuk is known as an easy-going person who has a bubbly and humorous personality as he often jokes around with Shin-Ae. He can be sarcastic at times as shown in Episode 14 where he jokes about how no one would like to be friends with Shin-Ae. Min-Hyuk likes to use modern slang.

Min-Hyuk can also be quite sneaky and cunning as he and his sister organize a meet-up between Shin-Ae and Kousuke Hirahara. He is also a caring friend to Shin-Ae, often showing a large amount of concern for her and her well-being. After hearing about Yeong-Gi’s carefully planned prank on Rika and Maya and his insistence on becoming Shin-Ae’s friend, he becomes worried after helping to set Shin-Ae up on a blind date with Yeong-Gi and Kousuke. Having second thoughts about his idea, he requests that Maya and Rika monitor the date in the chance that anything went wrong, especially wary about Yeong-Gi. After the intruder incident, he offered to attempt to schedule an earlier flight home after hearing about Shin-Ae’s troubles, despite not yet completing his school semester. Before leaving for Chicago a few months before the story begins, he also expressed concern for Shin-Ae’s well-being, enlisting his sister and Rika to help and support her in his absence.