As part of an exclusive collaboration between “Arknights: Endfield” and ZONe Energy’s ION Group, a limited-edition pack containing three bottles of HYPER ZONe and one original towel will go on sale in stages starting October 27, 2026. The towels come in six designs featuring characters such as Camille and Sue. A campaign will also be held where 25 winners will be selected at random to receive an original pouch if they collect all six designs and enter the drawing.