This song is made by 'ASK' from Silver Technology. I don't own any copyright.
I heard this song in a Flash DDR game first time like 15 years ago. And the melody stuck in my mind since the very first second.
Anyway I tried to find the website just to get old times back again, but Yahoo Japan stop their free space service years ago. So I mix this song with my memory voice.
Fortunately found a website backing up all the old songs from that DDR game. The link is below.