IVE's An Yu Jin and Rei join "Running Man" as guests.

Yoo Jae Suk and Kim Jong Kook play CEOs forming idol groups.

An Yu Jin takes charge at Kim Jong Kook's agency.

Rei clashes humorously with  CEO Yoo Jae Suk.

Kim Jong Kook focuses on An Yu  Jin in group photos.

Rei dismisses Yoo Jae Suk's  ideas playfully.

Yoo Jae Suk gets stressed due  to Rei's attitude.

Competition determines winning  idol group agency.

Episode airs on May 19 at  6:15 p.m. KST.

Catch the hilarious showdown  on "Running Man"!

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