Chiyaki × COVERARY Genuine Leather Monotone Collaboration Back Case

A collaborative smartphone case with illustrator Chiaki has come true!

With the theme of "feelings toward people connected through smartphones," designed as an easy-to-carry smartphone case, imagined as an item Chiaki herself would want to use.

Expressing Chiaki's worldview in print on a canvas of high-quality leather.
Luxuriously uses Italian leather with a textured surface that exudes quality, and Japanese leather with a popular metallic finish for leather accessories.

■Shell-Type Smartphone Case Compatible with All Models
We offer back covers compatible with almost all smartphones. Designed to fit each model, you can use the case with convenient functions intact.

■ Beautifully colored Italian shrink leather (01_Black)
Uses cowhide tanned by Mastrott, a prestigious Italian leather company.
Combines the distinctive softness and fine texture of Italian leather.

■ Elegant shining foil leather (04_Silver)
Moist and soft goat leather. It features a moderately elegant grain (leather texture) that makes scratches less noticeable, with firmness and softness that make it easy to handle.
Enjoy the beauty of elegant and supple leather.

■ Full leather finish
Using proprietary technology, the case is finished by covering from the back to the sides with a single piece of leather.

■ Smooth operation for various functions
Each model has camera holes and speaker holes, allowing various operations such as fingerprint recognition, volume adjustment, and charging while the case is on.
* Some models cannot be operated while the case is attached
* Compatibility with desktop charging or wireless charging is unconfirmed
*Depending on the case arrival time, volume and power buttons may be covered. Selection is not possible, but operation is unaffected, so please understand in advance.

■ Edge color matched to the color
The edges of the cut surfaces are finished with resin coating (edge painting). It creates a sharp impression with a color matching the leather.

■ Crafted by artisans' handwork
From cutting, bonding the case and leather, edge painting, to the finishing stamp, everything is carefully handmade.

■ Model-specific resin case
The base polycarbonate case comes in two types: clear and black. You cannot choose depending on stock availability, but it fits perfectly with the model-specific case for your device.

■ Notes
*Product images may differ in color from the actual product depending on your monitor settings
*Since each item is handmade, it may take some time for delivery

Since it varies by product, the Estimated shipping days(within Japan) can be found below the "About this product" section above.
Most products are usually shipped within 3 to 7 business days, but since each item is carefully handmade in-house as a made-to-order product, orders may take longer than usual when demand is high.


Domestic mail is free shipping, and courier delivery is 690 yen. Free shipping is available for purchases over 3,980 yen. International shipping fees vary depending on the country.

To ensure our customers can purchase and use our products with confidence, we offer several "special guarantees" for customers who purchase from this site. For more details, please see here

Do you have any questions before purchasing? Frequently asked questions from customers can be found here