At the peak of oshare kei's popularity, Zip.er were one of those bands to get into. Formed in 2007, Zip.er adopted a bold, cute oshare kei image, and fans often drew comparisons with the likes of An Cafe.
In 2011, Zip.er disbanded after the long, still-unexplained absence of drummer Kaji. All members have since gone on to other projects, with varying degrees of success: vocalist Towa joined LANDZ, whilst yua renamed himself Sei and joined L & DS.