Well, according to their website, they only released two singles.
But I thought I heard that somewhere that they released a mini-album?
Hmm... maybe I'm imagining things. XDD
Oh and I found a download for Plastic Art, in case you want it. ^^
4shared.com - online file sharing and storage - download the KIDDIE - Plastic Art [JRVKSP]_by_kenji.rar