ケミカルエモーション (Chemical Emotion)

Background
The lyrics in the song are somewhat vague, and it could be interpreted as a song about two girls and their love for one another, or just a dance track about love. The singers say they were sorrowful they met to one which this song is dedicated to for.

This song is featured on the album Pure Rhythm. It is muhmue's most popular song, his next popular being Maria Inside the Birdcage sung by Rin.