. . . series, that is. That "Stars Work Regular Jobs for Charity" show that aired after YH tonight had a star I didn't recognize be a bodyguard. As he went through his training, I was relieved to see that he had as hard a time during training in martial arts as I would have. . . well, I would have had more trouble, but you get the idea.
Coincidentally, one of the other stars was (I believe) Lee Se-eun, aka Han Sin-ae of Bodyguard, who worked as a zookeeper.