In a recent interview, Hyungsik expressed his affection for ZE:A member, Kwanghee.

He stated, "You have no idea how much of a relief it is that he got into 'Infinity Challenge'. What makes me happily satisfied is that for five years, he never rested once and ultimately got into this position. He's an amazing person. His viability is tremendous. He doesn't get tired of things, getting to his place now through overflowing energy. How intense must that have been. He looks easy and light, but do you think Kwanghee had no troubles?"

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ZE:A did not hit popularity right after debut, but thanks to Kwanghee's promotions on a variety of shows, their name started to become more familiar to the public. Hyungsik said, "He appeared on 'Strong Heart' and introduced the members.... Honestly, what idol member would do so like that? He wasn't trying to get himself known. I feel apologetic towards him too. Even when he went out on variety shows, he took at least one member with him."

Hyungsik added, "During our training period, I looked at Kwanghee and wondered, 'There's someone like him in this world?' He, in his entirety, was born as a celebrity. The other members sing and dance, but they don't have a lot of skill in talking. Seeing that, it could seem like we weren't able to reach Kwanghee's expectations. I'm sorry for not being able to protect his side."