Koi Nikki / Summer Mission

 is a single by Ueno Yuuka.

Regular Edition CD

 * 1) Koi Nikki (恋日記)
 * 2) Summer Mission
 * 3) Nijiiro Shabondama (虹色シャボン玉)
 * 4) Koi Nikki (恋日記) (off vocal ver.)
 * 5) Summer Mission (off vocal ver.)
 * 6) Nijiiro Shabondama (虹色シャボン玉) (off vocal ver.)

Limited Editions CD

 * 1) Koi Nikki (恋日記)
 * 2) Summer Mission
 * 3) Koi Nikki (恋日記) (off vocal ver.)
 * 4) Summer Mission (off vocal ver.)

Limited Edition A DVD

 * 1) Koi Nikki (Music Video)
 * 2) Koi Nikki (Music Video Making Video)
 * 3) 18th Birthday One-man Live Digest Video (2016.2.7)

Limited Edition B DVD

 * 1) Jacket Photos Making Video
 * 2) 18th Birthday One-man Live Selection Video (2016.2.7)