IZ*ONE Spring Collection ‘Secret Diary’ or just known as Secret Diary is the 3rd photobook released by IZ*ONE.
Secret Diary was released with two packages, the Photobook Package and the Calender Package.
- Package Box : 220 x 307mm
- Photobook : 192P
- DVD : Region Code ALL / Making Movie 55min
- [AR] Photocard : 12EA 1SET
- Photocard : 12EA 1SET
- ID Photo : 12EA 1SET
- Acrylic Keyring : Random 1 out of 12
- [AR] Bucketlist Card : 2EA 1SET
- Deco Sticker : 6EA 1SET
- Poster(1st Press Only)