Ningen | Fushin No Boukensha Tachi Ga Sekai O Suk...

: While often made of tinplate, manufacturers like Contents Seed produce character badges that are frequently packaged with high-quality cardstock backing. Go to product viewer dialog for this item.

: These are popular for displaying official art. You can often find them on sites like Goods Republic , which lists various official Japanese merch including character-themed folders. Ningen Fushin no Boukensha tachi ga Sekai o Suk...

It sounds like you're looking for high-quality paper goods or the manga/light novel for ( Apparently, Disillusioned Adventurers Will Save the World ). : While often made of tinplate, manufacturers like

Ningen Fushin No Boukenshatachi Ga Sekai O Sukuu Youdesu Vol.1-6 Set You can often find them on sites like

The most common "good paper" items are the official physical volumes.

: This is the original source material written by Shinta Fuji and illustrated by Susumu Kuroi , with six volumes published under the MF Books imprint. Collectible Paper Goods

: The manga adaptation features art by Masaki Kawakami and was collected in six tankōbon volumes. You can find full sets, like the Vol. 1-6 Manga Set at eBay - japan_comic_happy .