Mokou Fujiwara is a character from the Touhou Project series, known for her mysterious and aloof demeanor. She is an immortal human living in the Bamboo Forest of the Lost and is driven by her desire to outlive Kaguya Houraisan, with whom she shares a deep rivalry. Despite her initially rough exterior, Mokou is a complex character with a tragic backstory, involving themes of immortality, revenge, and redemption. Her role in the series highlights the struggles and isolation that come with eternal life, making her a compelling and multifaceted character.