Collaboration items between gag manga artist Kyosuke Usuta and the apparel brand “Granif” will go on sale in stores starting September 29, 2026. Characters from three series—“Sugoi yo!! Masaru-san,” “Pew! Pew! Jaguar,” and “Arabake! Arato Gungun Park”—will appear in the lineup, which features a total of 12 items, including T-shirts and hoodies.