Ai no Sei de Nemurenai

 is the 23rd single by Misato Aki.

Tracklist

 * 1) Ai no Sei de Nemurenai (愛のせいで眠れない)
 * 2) brilliant voice
 * 3) Ai no Sei de Nemurenai (愛のせいで眠れない) (Instrumental)
 * 4) brilliant voice (Instrumental)