Origin
Japan
A strange woman who is usually seen arround Kanba and serves as an antagonist. She possesses a laser sighted slingshot that fires red balls which erase memories and also owns a penguin just like each of the Takakura siblings, which she names Esmerelda. She appears to be an old admirer of Kanba and seems to be the in same situation as him, as her brother Mario is also under the influence of a penguin hat similar to Himari's and to ensure his survival she also must retrieve Ringo's diary.
Penguindrum
The story centers around the lives of three siblings, Takakura Kanba, Takakura Shouma and their terminally ill sister Takakura Himari. Himari passes away after going out on a trip with her brothers. She was however, miraculously saved by a spirit thriving in a penguin-shaped hat. In return for her extended life, the twins must search for an item known as the Penguin Drum with the aid of three penguins which are visible only to the siblings.
