Ai no Genri

 is the eighth single released by Ide Mariko.

Single Information
 was used as the theme song for the drama Okumanchouja to Kekkon Suru Houhou.

Tracklist

 * 1) Ai no Genri (愛の原理)
 * 2) SWING
 * 3) Ai no Genri (愛の原理) (D.O.I MIX)