Nogizaka46 member Kanagawa Saya has revealed all six postcard designs that come as bonus inclusions with her debut photobook "Gradation of Like," arriving June 30.

The postcards offer fans a varied glimpse into Saya's first solo project, which was shot on location in Dubrovnik, Croatia. Each of the six designs captures a different side of the idol—from playful and carefree to sophisticated and alluring.

The lineup includes several swimwear shots: a striking orange one-piece, a vibrant blue ensemble, and a candid moment where she's enjoying potato chips poolside. Other postcards show her lounging by the pool, relaxed in a sauna with a smile, and wearing black lingerie with a softer expression. The collection balances mature elegance with youthful charm, highlighting Kanagawa's range as a performer.

Though all six designs are confirmed, which specific postcard comes in each copy remains a mystery—a common practice in Japanese idol merchandise that encourages fans to purchase multiple copies for the full set.

Kanagawa emphasized authenticity as a key concept for the project, wanting to showcase her genuine self rather than a manufactured image. The Croatian setting was a dream come true for the idol, who had long wanted to shoot in Europe.

"Gradation of Like" marks Kanagawa's first solo photobook venture, expanding her presence beyond her group activities with Nogizaka46. The project represents a natural step for the member as the group continues to release solo work from its roster.

For collectors and fans, the photobook offers substantially more content than the teaser postcards already circulating online. Pre-orders are available now ahead of the June 30 release date.