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

Chapter 25.5: Bonus 4-koma
Chapter 25
Chapter 26
Chapter 25
Chapter 26
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!