The "Yu Brothers" spent a successful day with their favorite younger colleagues.

On the November 3 broadcast of SBS's "Whenever Possible," actors Lee Dong-hwi and Yang Se-jong drew attention as they appeared as "gap friends."

Before meeting the gap owners in earnest that day, the Yu Brothers caught up on each other's recent news with their beloved younger peers. Yang Se-jong, who sang at a fan meeting, said, "I sang until my throat felt like it was tearing. My voice cracked," drawing laughter.

When asked if he was good at singing, Yang Se-jong drew attention by completely shutting down further questions, saying, "I can't sing. I really can't sing."

During the day's first gap mission, the four dramatically achieved success on Stage 2 on their ninth attempt. With that, the four advised the gap owners, "There is only one chance left. There is nothing to even think over. Stop, stop. You need to stop."

Although it was a Stage 2 success, the four, having safely delivered gifts to the gap owners, moved to eat a meal in high spirits. Looking for a place to eat nearby, Yoo Yeonseok mentioned a taco place, to which Yu Jae-seok responded, "Ah, tacos sound good."

However, Yoo Yeonseok kept mentioning other menu items. To this, Lee Dong-hwi remarked, "Jae-seok hyung has said tacos sound good several times now, so why do you keep looking for something else?" and in the end, tacos were decided as the lunch menu before they moved.

Once the destination was set, Yang Se-jong set the destination on the map app and led the way on his own without looking back. Seeing Yang Se-jong pay no mind to anything else once fixated on one thing, Yu Jae-seok dissuaded him by saying, "Don't look at the navigation," drawing laughter.

Seeing Yang Se-jong even carefully keep used tissues, Lee Dong-hwi remarked, "He's a dongsaeng you can't help but love." In response, Yoo Yeonseok said, "He follows older guys well, and when he's with younger ones, he has leadership. But he's the type of person who digs into only one well." Then, Yu Jae-seok fell for Yang Se-jong's charms, saying, "Just seeing today, I can tell you focus on only one thing."

Yang Se-jong showed little interest in anything else. This led to a question asking what his biggest interest has been lately. Yang Se-jong then showed his passion as an actor, answering, "The script for my next project."

He also shared that he went running at 4:40 a.m. on the day of filming, saying, "I looked in the mirror, and my face didn't look good, so I went running." To this, Lee Dong-hwi advised, "At times like that, take a half-body bath." However, Yang Se-jong simply continued with his own story, prompting Lee Dong-hwi to say, "Are you listening to what I'm saying?" which provoked bursts of laughter.

Meanwhile, during the second gap mission that day, the four succeeded in the Stage 3 mission thanks to the active performance of Yoo Yeonseok, exciting everyone.