Type-A

1. Kizuitara Kataomoi (気づいたら片思い)
2. Romance no Start (ロマンスのスタート)
3. Toiki no Method (吐息のメソッド)
4. Kizuitara Kataomoi off vocal ver.
5. Romance no Start off vocal ver.
6. Toiki no Method off vocal ver.

1. Kizuitara Kataomoi Music Video
2. Romance no Start Music Video
3. Creator's Etude

Type-B

1. Kizuitara Kataomoi (気づいたら片思い)
2. Romance no Start (ロマンスのスタート)
3. Kodoku Kyoudai (孤独兄弟)
4. Kizuitara Kataomoi off vocal ver.
5. Romance no Start off vocal ver.
6. Kodoku Kyoudai off vocal ver.

1. Kizuitara Kataomoi Music Video
2. Kodoku Kyoudai Music Video
3. Creator's Etude

Type-C

1. Kizuitara Kataomoi (気づいたら片思い)
2. Romance no Start (ロマンスのスタート)
3. Umareta Mama de (生まれたままで)
4. Kizuitara Kataomoi off vocal ver.
5. Romance no Start off vocal ver.
6. Umareta Mama de off vocal ver.

1. Kizuitara Kataomoi Music Video
2. Umareta Mama de Music Video
3. 4 Member Documentary

Edisi Teater

1. Kizuitara Kataomoii (気づいたら片思い)
2. Romance no Start (ロマンスのスタート)
3. Dankeschon (ダンケシェーン)
4. Kizuitara Kataomoi off vocal ver.
5. Romance no Start off vocal ver.
6. Dankeschon off vocal ver.