I don't know why people keep talking about Ijin resting, he's literally a top dog ex mercenary, of course he's going to get into a lot of messes. He probably does rest a lot in between plots, but the author only lets us see the action (most of the time, with some normal high school time sprinkled in.). Like, I don't think he's literally jumping from one baddie to the other the next day. There's probably days or even weeks in between, but this is an action manhwa, not slice of life.
I don't know why people keep talking about Ijin resting, he's literally a top dog ex mercenary, of course he's going to get into a lot of messes. He probably does rest a lot in between plots, but the author only lets us see the action (most of the time, with some normal high school time sprinkled in.). Like, I don't think he's literally jumping from one baddie to the other the next day. There's probably days or even weeks in between, but this is an action manhwa, not slice of life.