A preview for episode 48 of SBS's 'Teummannamyeon' revealed a moment where Lee Sang-yoon left Yoo Jae-suk visibly flustered.
The video was uploaded on March 16, 2026, to the official SBS Enter YouTube channel.
In one scene, an SNU student throws a sharp question at Yoo Jae-suk, drawing out his candid reaction.
Yoo Jae-suk’s stunned expression in particular is going viral.
This episode, where Lee Sang-yoon and Yoo Jae-suk’s chemistry shines, is raising major expectations among viewers. Yoo Jae-suk was once widely known by the nickname 'Grasshopper', and there’s even a moment that looks back on that moniker.