It's a military story, but why is it so funny and warm?

I saw a full group show after they were discharged from the military, and I didn't know that all three of them were barbers. It was interesting.
There's a story about Lee Jeong-shin who cut the hair of over 900 people and even bought hair clippers with his own money.

You're properly equipped.

The episode where he asked to play just one song while he was training for Han Ki was so touching.

They say he survived the cold training grounds with just one song.

I don't see a lot of variety shows with three people like this, so I think you can only see them on old shows.

I wish something like this would come out these days too