someone answer! whats this song?

[hookhook]

Hello everyone! I was wondering if someone recognized this song that plays half way into this clip?? Please let me know if you have any clue. I want some more J-pop music and this sounds like something I like :)

http://www.kaneva.com/asset/assetDetails.aspx?assetId=7283&communityId=0

Thanks!!

[SonRyu]

That's the OP song to the series, "Nichiyoubi no Taiyou (The Sun of Sunday)" by the-Neutral.