Yonka

ヨンカ

The Medaka Mermaid Quintuplets (Medaka no Ningyo no Itsutsu-go) are five small young mermaids who are friends with Keimi. Their names are Ichika, Nika, Sanka, Yonka, and Yonka Two.
Yonka has pink hair and a brown-striped tail; her top is brown and her hat is white.
The five sisters tend to speak in a unique pattern. Ichika begins by making a regular statement. Nika then states an exclamatory version of Ichika's statement. Sanka then states the opposite of the original statement. Yonka then questions the original statement. Finally, Yonka Two questions whether the original statement matters or not. An example of a typical routine:
-Ichika: Luffy is a pirate.
-Nika: Luffy is a pirate!
-Sanka: Luffy isn't a pirate.
-Yonka: Luffy might be a pirate.
-Yonka Two: So what if Luffy's a pirate?
Other than that, they are cheerful and friendly and usually stay close together.
First Appearance: Chapter 608; Episode 527