◊ Title: 科学世紀の少年少女
◊ Artist: ZUN
◊ Album: 夢違科学世紀　～ Changeability of Strange Dream

Wow, this song is pretty awesome. However, even though Maribel and Renko are supposedly from a future where all food is synthetic and where children don't smile, all their songs seem pretty old aged and happy. I guess that's the magic of ZUN?