Yoosung is the demon of the Sloth sin.

So, easily, Yoosung spends most of his time relaxing. Well, the other men (and Jaehee) tend to say he's slacking off.

Maybe that's putting it lightly.

Yoosung spends most of his time gaming. And, if the demon isn't gaming, he's asleep. It's a rather simple routine...

Well, until he made a pact with a mortal. Now he's at every beck and call.

How peculiar for the avatar of the Sloth.