A “When the Seagulls Cry” pop-up shop will be held from November 25 to December 8, 2026, at the Ikebukuro Sukima Store in front of the Central Ticket Gate at JR Ikebukuro Station! Merchandise featuring original illustrations by Higashi-sensei celebrating Beatrice’s birthday, as well as retro-style art goods, will be available. Pre-orders will begin on October 7 at the eeo Store online, and a bonus postcard will be included with every 2,200 yen (tax included) spent.