輪るピングドラム

Himari Takakura collapses from a long illness during a family outing to the aquarium, then wakes with a scarlet penguin-shaped hat fused to her head and a new voice living inside it. To keep her alive, the spirit orders her brothers Kanba and Shouma to recover a hidden object called the Penguindrum, dragging the family and three unruly penguins only they can see into a search that keeps circling back to buried secrets from their past. This manga adapts the original Penguindrum anime.