Yasuharu Takanashi is the composer of Fantasista Doll anime and he also composed the OP!!! Go to Takanashi Japanese Wikipedia page in the section 主題歌・テーマ曲CD(2012年以降)!
and this is Takanashi's style! Listen here:
http://www.amazon.co.jp/%E4%BB%8A%E3...83%BC%E3%83%AB