I'd give this an 8/10. It’s really quite good, actually. I remember back in 2006 there was a show called Heroes. This feels similar to that series, though it isn’t on the same global scale; it’s more focused within Korea. The narrative begins with children who develop superpowers as they grow older. To make things feel more relatable, ordinary people—underdogs—also unexpectedly gain abilities. That's where the plot expands and some of the humorous scenes come from. It was a really good watch and I enjoyed it quite a bit.

Source on TMDB