Yumeko is a fictional character from Touhou Project, serving as the loyal maid and swordswoman of the Scarlet Devil Mansion’s mistress, Konpaku Youmu. She is known for her composed, dutiful personality and exceptional combat skill, especially with a sword. In the series, Yumeko appears as an enemy character in the PC-98 era game Mystic Square, where she acts as the final boss’s servant and protector. Her role emphasizes discipline, loyalty, and a strong martial presence.