Ako Shirabe is a fictional character from the anime series "Suite Pretty Cure." She is a young girl with a mysterious aura who plays a significant role in the series. Initially introduced as the granddaughter of Mephisto, the series' antagonist, Ako is later revealed to be the human form of Cure Muse, one of the Pretty Cure warriors. Despite her young age, Ako is intelligent and determined, often aiding the main characters in their quest to protect the world from the forces of evil. Her character development is marked by her transformation from a secretive, independent individual to a trusted and valued member of the Pretty Cure team.