Otsuka Ai – フレンジャ- / Frienger
Track 01 from EP "フレンジャ- / Frienger"
Release Date: 2006.04.12
Otsuka Ai – 愛 / Ai (사랑)
Track 13 from Album "Love Letter"
Release Date: 2008.12.17
Otsuka Ai – ポケット / Pocket (포켓)
Track 12 from Album "Love Letter"
Release Date: 2008.12.17
Otsuka Ai – One×Time
Track 11 from Album "Love Letter"
Release Date: 2008.12.17
Otsuka Ai – 360゜
Track 09 from Album "Love Letter"
Release Date: 2008.12.17
Otsuka Ai – Happy Days
Track 01 from EP "Happy Days"
Release Date: 2004.07.07
Otsuka Ai – ド☆ポジティブ / Do ☆ Positive (완전 ☆ 포지티브)
Track 08 from Album "Love Letter"
Release Date: 2008.12.17
Otsuka Ai – Creamy & Spicy
Track 07 from Album "Love Letter"
Release Date: 2008.12.17
Otsuka Ai – 君フェチ / Kimi Fechi (당신에 대한 페티시즘)
Track 06 from Album "Love Letter"
Release Date: 2008.12.17
Otsuka Ai – 人形 / Ningyou (인형)
Track 05 from Album "Love Letter"
Release Date: 2008.12.17
Otsuka Ai – クラゲ, 流れ星 / Kurage, Nagareboshi (해파리, 별똥별)
Track 04 from Album "Love Letter"
Release Date: 2008.12.17
Otsuka Ai – バイバイ / Bye Bye (바이 바이)
Track 03 from Album "Love Letter"
Release Date: 2008.12.17
Otsuka Ai – ロケットスニ-カ- / Rocket Sneaker (로켓 스니커)
Track 02 from Album "Love Letter"
Release Date: 2008.12.17
Otsuka Ai – 日日, 生きていれば / Hibi, Ikite Ireba (매일, 살다 보면)
Track 01 from Single "日日, 生きていれば / Hibi, Ikite Ireba (매일, 살다 보면)"
Release Date: 2016.07.11
Otsuka Ai – Love Letter
Track 01 from Album "Love Letter"
Release Date: 2008.12.17
Otsuka Ai – プラネタリウム / Planetarium
Track 10 from Album "Love Cook"
Release Date: 2005.12.14
Otsuka Ai – Cherish
Track 07 from Album "Love Cook"
Release Date: 2005.12.14
Otsuka Ai – ネコに風船 / Nekoni Huusen (고양이에게 풍선)
Track 06 from Album "Love Cook"
Release Date: 2005.12.14
Otsuka Ai – Smily
Track 04 from Album "Love Cook"
Release Date: 2005.12.14
Otsuka Ai – Love Music
Track 13 from Album "愛 Am Best / Ai Am Best (아이 Am Best)"
Release Date: 2007.03.28
Otsuka Ai – 5:09 A.M.
Track 01 from Album "Love Cook"
Release Date: 2005.12.14
Otsuka Ai – プラネタリウム / Planetarium
Track 12 from Album "愛 Am Best / Ai Am Best (아이 Am Best)"
Release Date: 2007.03.28
Otsuka Ai – ネコに風船 / Nekoni Huusen (고양이에게 풍선)
Track 11 from Album "愛 Am Best / Ai Am Best (아이 Am Best)"
Release Date: 2007.03.28
Otsuka Ai – ビ-玉 / Bi-Dama (유리구슬)
Track 10 from Album "愛 Am Best / Ai Am Best (아이 Am Best)"
Release Date: 2007.03.28
Otsuka Ai – Smily
Track 09 from Album "愛 Am Best / Ai Am Best (아이 Am Best)"
Release Date: 2007.03.28
Otsuka Ai – Cherish
Track 08 from Album "愛 Am Best / Ai Am Best (아이 Am Best)"
Release Date: 2007.03.28
Otsuka Ai – 黑毛和牛上鹽タン燒680円 / Kuroge Wagyuu Zyou Shiotanyaki 680 Yen (검은털 일본소 혀소금구이 680엔)
Track 07 from Album "愛 Am Best / Ai Am Best (아이 Am Best)"
Release Date: 2007.03.28
Otsuka Ai – 大好きだよ / Daisukidayo (정말 좋아해)
Track 06 from Album "愛 Am Best / Ai Am Best (아이 Am Best)"
Release Date: 2007.03.28
Otsuka Ai – キミにカエル. / Kimini Kaeru. (너에게 돌아갈거야.)
Track 12 from Album "Love Is Best"
Release Date: 2009.11.11
Otsuka Ai – 金魚花火 / Kingyo Hanabi (금붕어 불꽃놀이)
Track 05 from Album "愛 Am Best / Ai Am Best (아이 Am Best)"
Release Date: 2007.03.28