Everyone was given 3 hints on a fellow member. SeungGi correctly guessed Sejung & said he could tell with just the first 2 hints & apologized for not taking more time. (Caption: Sorry for being smart!) When he was told that many of the members couldn’t guess correctly without extra hints, he joked that they were not as close as people might think.
Sejung received these 3 hints: voted #1 celebrity who would likely excel in corporate life, appeared in sitcom, appointed Hanwoo Keeper & 1 extra hint (after doing voice imitation):
appears in weekend variety. The answer is pretty obvious to Airens, right?