ZE:A's Kwanghee reveals why he's afraid of Kang Ho Dong on the January 12th installment of 'Knowing Brothers'. 

Kwanghee expressed, "I'm scared of even Kang Ho Dong sitting there. I keep ending up calling Kang Ho Dong, 'Hyung.' When the camera turns off, Kang Ho Dong looks at me like he wants to kill me. Please don't ever turn off the cameras."

He continued, "I was on 'Star King' for a long time, and I ended up going to 'Infinity Challenge'. After appearing on 'Infinity Challenge', I didn't call Ho Dong. I didn't even see him after my discharge." Kwanghee said, "I have a phone number, but I don't know how I should call. It made me wonder what I should say."

Kang Ho Dong expressed, "Kwanghee was sensitive about it, so I texted him at the time. There was a good opportunity, so that's why I contacted him. I hope he's able to show up on a much bigger stage. I can't forget about Kwanghee. I met him first on 'Strong Heart'." Kwanghee responded, "I talk really bluntly because I want to look good in Kang Ho Dong's eyes. I even confessed my cosmetic surgery. Kang Ho Dong was kind to me even from then."