Gryphline announced on September 1 that it will introduce collaboration merchandise featuring the 3D real-time strategy RPG 'Arknights: Endfield' and Galaxy Store, while operating a pop-up store at Samsung Store Bucheon Jungdong.

The 'Arknights: Endfield Autumn Picnic Accessory Edition' has been prepared in two options, for the Galaxy Z Fold8 and Galaxy S26 Ultra. A total limited run of 1,000 units will go on sale online and offline starting at 10:30 a.m. on the 11th.

The edition consists of model-specific Tiphros phone cases, an autumn picnic acrylic diorama, an Originium Slug Galaxy Buds pouch, a Pelica mousepad, an Adelia acrylic korotto, and three photo cards.

The pop-up event will run from the 11th to the 20th on the first floor of Samsung Store Bucheon Jungdong. The venue will feature an edition showcase, mini-games, a photo zone, and a merchandise shop.

Visitors can participate in a stamp rally consisting of three missions: 'Originium Slug Hunt TIME!', 'Tiphros's Shooting Test', and 'A Word of Autumn'. From the 11th to the 13th, the photo zone will also feature cosplayers and mascot characters for Tiphros, Pelica, and Adelia.

At the venue's 'GalS Station', visitors can experience two 'Arknights: Endfield' themes using Galaxy Z Fold8 series devices. The collaboration PV depicts Tiphros, Pelica, and Adelia going on an autumn picnic.