Touhou Project Nijisousaku series: Youkai Hachou Hana Waka Omofu Jiwaari ya Nashi ya to (Light Novel)

is a spin-off light novel of the Tohou Project series. The volume is written by Kusanagi Jin and Illustrated by Kozou. It was released under the Dengeki no Shin Bungei Imprint in January 2021.

Synopsis
Touhou Project x Girl Swordfighter x Modern Weapon!

When modern weapons get lost in Gensokyo, the sword of Youmu Konpaku, the gardener of Shiratamaro, becomes clear.

In the novel serialized in the Touhou Project official web media "Touhou Garaku Tasou Magazine" The long-awaited book with additions and corrections!

(source: Dengeki Bunko Official Website - Translated)