Yamada, Nina

ニナ

Nina is the main character and the person who swallowed a magic pearl. She now has Ichi and Zero living in her closet (which has transformed into a good-sized apartment), and other teams are constantly chasing her. She is falling for both Ichi and Zero, and seems unable to decide between the two. She is 12 years old and looks for a cute boy who can both protect her and love her.
Nina is a 7th-grade girl with an aggressive character. She is targeted by many sorcerer examinees because she accidentally swallowed the crystal pearl, which they need to pass their exam to become professional magicians. Through contact with Zero and Ichi as Guardians, Nina began to change her mind about them. Her hobby is stretching or doing sit-ups.
Nina is apparently extremely bad at all forms of housework, although she does not seem to realize this.

Spoiler

Nina can also be seen with her two companions in Mermaid Melody, Pichi Pichi Pitch, but only once.