The Medaka Mermaid Quintuplets are five small young mermaids who are friends with Keimi. Their names are Ichika, Nika, Sanka, Yonka, and Yonka Two. Yonka Two has dark brown hair and a yellow-striped tail, her top is black, and her hat features jaguar prints.
The sisters have a unique way of speaking. Ichika starts with a regular statement. Nika follows by exclaiming the same statement. Sanka then states the opposite of the original statement. Yonka questions the original statement. Finally, Yonka Two questions whether the original statement even matters. Here’s an example:
-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?
Besides this, they are cheerful and friendly, usually staying close together. They first appeared in Chapter 608 and Episode 527 of One Piece.
