Penguindrum

Sinopsis

The Takakura siblings, twin brothers Kanba and Shoma, and their terminally ill younger sister Himari, live together without their parents. One day, during a trip to the aquarium, Himari collapses and dies. However, she is miraculously revived by a spirit residing in a penguin-shaped hat she had purchased. This provisional resurrection comes with a condition: to keep Himari alive, the brothers must find a mysterious item known as the "Penguin Drum." To aid them in their quest, three penguins, visible only to the siblings, appear.