Get Exclusive Collab Art Cards Featuring Maomao, Jinshi, Rin & Mizumori — "Kusuriya no Hitorigoto" × "COSMOS" Simultaneous Release Fair
Buy either Kusuriya no Hitorigoto Vol. 22 or COSMOS Vol. 9 at participating Japanese bookstores from June 18, 2026, and receive a rare cross-series drawn-down collab card.
