VIDEOS:
The Medaka Mermaid Quintuplets
If you translate their names, they're effectively named; One-ka, Two-ka, Three-ka, Four-ka and Four-ka Two.
Example of:
Odd Name Out
If you translate their names, they're effectively named; One-ka, Two-ka, Three-ka, Four-ka and Four-ka Two.
Example of:
Odd Name Out