Noh Yoon-seo and Nam Joo-hyuk appearing on Elle Korea's Chemistry Workshop

Starting with the anecdote about how we used to call each other "senior" at first but have now become like playful older brother and younger sister...

There were many funny moments, even down to reenacting the tone of them scolding each other.

Especially since they revealed that Nam Joo-hyuk looks innocent but is sometimes hard to reach.

The back-and-forth banter between Noh Yoon-seo, who was flustered, and the other person explaining that they act like that all year round just because she was late once, was so hilarious.