IVE Rei "This activity was hard" candid confession... Yoo Jae Suk's reaction?

Group IVE's Rei opens up about what it's like to end his latest stint on the show.

On the final episode of tvN's "Sixth Sense: City Tour," which aired on Tuesday, actor Cha Tae Hyun and IVE's Rei appeared as guests. In the episode, the cast traveled to four hot spots in Jeonju to find the real place.

Rei met up with Cha Tae-hyun first. When he asked her age, she replied, "I was born in '04," to which he expressed surprise, saying, "My oldest child is born in '07." "Our youngest is also born in '07," Rey said, which resonated with Cha."

Later, Rei joined the show's cast in earnest. Mimi welcomed her, saying, "You've been active recently," and mimicked IVE's "Bomb Junkie" dance, while Yoo Jae Suk said, "Ive went crazy again," and asked him how he felt about the program.

Rei honestly replied, "This activity was hard," to which Yoo Jae Suk wittily replied, "Who doesn't know hard," causing the scene to erupt in laughter.

Meanwhile, Rei's group, IVE, is continuing to be active as they recently wrapped up their new song activities.