Well, I too hate Manga-style art, and have a hard time understanding what the whole infatuation is with it. But if that is what he prefers, you may have to suck it up...or compromise, maybe a 50/50 split of manga & realistic. Sort of like how back in the 1st Ed days we had such wonderful artists as Jeff Dee, Willingham, and Erol Otis all working on art for the same product, and even WITHIN the same module etc.