Chen Yakumo is a fictional character from the Touhou Project series. She is a nekomata, a type of cat youkai, and serves as the shikigami of Ran Yakumo. Chen is known for her playful and mischievous nature, often creating trouble for others in Gensokyo. Despite her seemingly carefree personality, she is a loyal and devoted servant to Ran. In the series, she often acts as a minor antagonist, testing the skills of protagonists. Her character adds a whimsical touch to the series, embodying the unpredictable and magical essence of the Touhou universe.