Oyamada Mannoko

'Oyamada Mannoko is the 5-year old daughter of Mansumi and Keiko Oyamada. She is also the younger sister of Oyamada Manta.

Appearance
Like Manta, she is short and has has sandy-brown hair and large eyes. She has red bowties on her hair and wears a red dress and shoes.

Personality
She is a master at computers. When Mansumi noticed it, he put her in charge of the Oyamada Company's software department and built up a fortune with stocks. Although she doesn't like that problematic job at all, she uses it to tease Manta when they are together. She loves bespectacled men.

Shaman Fight First Round
She is seen in the hospital with Manta and Keiko. She tells her mother about Asakura Yoh and how he and Manta ditch class so they can be together.

Anime/Manga Difference
Mannako never appears in the anime and only appears in the manga