i know its been so long but does anyone know why the art changed?

What do you mean? The art just improved ╮(￣▽￣)╭ Do any of the characters look different to you?

clearly. ╮(￣▽￣)╭

This series has been going on for years, you think they would've used the same techniques or improved? Like seriously, I like the new art. ლ(´ڡ`ლ)