So, apparently this band has been around for almost 20 years, but I only just recently heard of them. Some of their songs were used as inserts for the anime Honey and Clover (Hachikuro), but they appear to be from further back in their discography. Similar in sound to the pillows, but....I dunno, more "experimental" maybe?
Badass overall. http://spitz.r-s.co.jp