Les covers et tracklist du nouveau single des Berryz Kobo ont été révélés:

Regular A:

Contenu CD:

1. Otona na no yo

2. Ichi-Oku San-Senman so Diet Okoku

3. Otona na no yo (instrumental)

4. Ichi-Oku San-Senman so Diet Okoku (Instrumenal)

Regular B:

Contenu CD:

1. Otona na no yo

2. Ichi-Oku San-Senman so Diet Okoku

3. Otona na no yo (instrumental)

4. Ichi-Oku San-Senman so Diet Okoku (Instrumenal)

Limited A:

Contenu CD:

1. Otona na no yo

2. Ichi-Oku San-Senman so Diet Okoku

3. Otona na no yo (instrumental)

4. Ichi-Oku San-Senman so Diet Okoku (Instrumenal)

Contenu DVD:

1. Otona na no yo (MV)

2. Otona na no yo (Marking-Of)

Limited B:

Contenu CD:

1. Otona na no yo

2. Ichi-Oku San-Senman so Diet Okoku

3. Otona na no yo (instrumental)

4. Ichi-Oku San-Senman so Diet Okoku (Instrumenal)

Contenu DVD:

1. Ichi-Oku San-Senman so Diet Okoku (MV)

2. Ichi-Oku San-Senman so Diet Okoku (Marking-Of)

Limited C:

Contenu CD:

1. Otona na no yo

2. Ichi-Oku San-Senman so Diet Okoku

3. Otona na no yo (instrumental)

4. Ichi-Oku San-Senman so Diet Okoku (Instrumenal)

Contenu DVD:

1. Otona na no yo (Close-up ver.)

2. Ichi-Oku San-Senman so Diet Okoku (Close-up ver.)

3. Otona na no yo (Dance Shot ver.)

4. Ichi-Oku San-Senman so Diet Okoku (Dance Shot ver.)