"Kokoro no Wakusei ~Little Planets~" (こころの惑星) is Aiko Kayō's seventh single.

It was released on May 25, 2005, by Avex Trax.

Kokoro no Wakusei ~Little Planets~ was used as the first ending theme for the anime The Law of Ueki.

The b-side track is a cover of one of Kylie Minogue's older singles.

This 2000s Japanese single–related article is a stub.