23degrees.

 is a single by Iizuka Mayumi.

CD

 * 1) 23℃ Story
 * 2) Chocolate Cosmos (チョコレートコスモス)
 * 3) 23degrees
 * 4) Valentine Dai Sakusen (バレンタイン大作戦)
 * 5) Kimi Dake wo... (君だけを・・)
 * 6) "Mata ne." (「またね. 」)

Limited Edition DVD

 * 1) Live & Back Stage
 * 2) Photography
 * 3) Recording