Sawaya Yoko

Sawaya Yoko aka Phantom Moon is a major character in Monster Kid, Monster Kid: Master of Monsters and Monster Kid: Evolution as well as appearing as one of the main characters in Age of Monster Kid. She is a business woman, CEO of Phantom Industries as well as the wife of Hino Yoko as well as being the mother of Machi Yoko and Minako Yoko.

Sawaya Yoko is also the best friend of Mary Stewart.

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