I like the art, but nearly every character, including the MC, is unlikable, except for the MC's sister (detective) and his girlfriend (nurse's aide), Ura.
The plot also feels very disjointed at times, but I feel most manhwas have better plots than most manga's, with all their recycled school settings and cliches, and this manhwa is no exception.
This needs a better translation, but I only know some Japanese and my Korean ability is next to none.
I'd give this around 5 or 6/10. The artstyle is what salvages it for me.
That said, I'm not going to lose my shit over it. Just making an observation.
Choose to read it or don't.