Not only is the artwork downright incredible, but the different applications of it for the sake of parody always leaves me giggling. Such important works of art in history used for comedic reactionary moments is one of the best ideas I'm glad I've read, especially when the artwork does a great job of keeping up with the details of said art it parodies.
As for the characters, they're serviceable, silly high school anime archetypes, but the fact that they're important art figures leaves plenty of room for some great comedy, especially with the choices for some of them being very absurd. And the adventures they go on can be equally as crazy and fun, with great incorporation of both old art and modern pop culture. You'll even grow attached to them and their struggles.
A love letter to artwork of old, artwork of new, and Shonen Jump, if you enjoy a good, sophisticated laugh, then get ready to, ahem, piss yourself laughing.
