The Grimoire of Usami 秘封倶楽部異界撮影記録 (Secret Sealing Club's Otherworld Photographic Record) is an official Touhou book, released April 27, 2019. The book features a comic written by ZUN and drawn by Aya Azuma, and shows a large selection of Spell Cards which are commented and judged by various characters during a firework festival.
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MangaDex: The Grimoire of Usami
Released by Reality Dreamers.