It's been a while since ZE:A's Kwanghee joined 'Infinity Challenge' as the sixth man, but it seems that he may have more adjusting to do!

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On the December 19th episode, his fellow ZE:A member Siwan and Lee Sung Min showed up to give him some acting advice and training. While explaining the scenario he had to act out, they suddenly asked Kwanghee which 'Infinity Challenge' cast member he's most afraid of. 

Though he did his best to ignore their question, he eventually answered, "I'm most scared of Jung Jun Ha hyung." The camera then showed Jung Jun Ha's expression, and he did not look pleased.

Who was your guess?