Very informative, and probably something I'll return to often since I read through it cover to cover instead of actually trying to memorize the expressions. You get the hangeul, a breakdown of what the expression means literally and figuratively, and what each word means on its own, which is cool because you can see the expression and how it was shaped. You also get some cultural background on some of them, and then sample conversations using the expression. (Some of them are kind of unintentionally hilarious. I got way too invested in them sometimes. You made food for 50 people but 100 are coming!!! WHAT ARE YOU GONNA DO, EXAMPLE GIRL?!)
The illustrations are.... special... I mean I can see the idea of wanting to associate an image to an expression for ease of association, but not gonna lie, some of them are kind of disturbing.