The “Nijisanji Hokaron Mini 8P” and “Nijisanji Hokaron Stick-On Mini 8P”—collaborative products between the VTuber group “Nijisanji” and Lotte’s portable hand warmers “Hokaron”—will go on sale nationwide starting September 7, 2026. These are limited-edition products available only this winter; scanning the QR code on the inside of the package lets you listen to all four original episodes featuring Kanou, Kuzunoha, Saki Sasaki, and Yuka Shiina.