Okay, I'll go on a limb and say this is in the top 5 of the manhwa's I've read. If you're on the edge about this on and don't know whether you want to read it here's my advice: just go and read the book. The characters are great and so are their interactions. The plot goes smoothly and the romance isn't too fast paced. The art is a bit wonky at first, but you grow to apreciate it and get used to it while reading.
I binged this in one sitting and I know if you do read it you'll do the same.