Touhou ~ The Tiles That I Cannot Cut Are Next to None! (Doujinshi)

Vol.2 Chapter 10.5: Vol. 2 Extras
Vol.2 Chapter 10
Vol.3 Chapter 11
Vol.2 Chapter 10
Vol.3 Chapter 11
A mahjong craze has swept Gensokyo. Youmu, a total beginner at mahjong (with a completely useless ability at that), has no choice but to go against the top players of Gensokyo – for her mistress' honor and her own!