Mayo Jessica is a young girl who appears as a central figure in the six-episode OVA series Sol Bianca: The Legacy. She is depicted as a child with very long purple hair and blue eyes. Her background is marked by a sense of loss and longing: she stows away aboard the colossal starship Sol Bianca, which is crewed by a group of female space pirates, because she is searching for her parents. In the setting of the story, humanity has spread across the galaxy and Earth has become a forgotten, lost planet. Mayo’s desire to reunite with her mother and father drives the primary plot, as her presence prompts the crew to embark on a journey toward Earth, uncovering secrets about the abandoned world along the way.

Personality-wise, Mayo is portrayed as curious, determined, and emotionally vulnerable. Her decision to hide on a pirate ship demonstrates a certain bravery and desperation, but she also exhibits the innocence and naivety typical of a child. She is not a combatant or a specialist; rather, she relies on the protection and guidance of the crew. Her role in the story is that of a catalyst—her arrival forces the experienced pirates to confront their own pasts and reconsider their goals. Key relationships include the four main crew members: April Bikirk, Feb Fall, June Ashel, and Janny Mann. Mayo forms a particularly close bond with June, who acts as a protective and caring figure. Over the course of the OVA, Mayo undergoes a subtle development from a frightened stowaway into a more confident individual who begins to trust her new companions. She does not possess any extraordinary abilities; her strength lies in her emotional sincerity and the hope she represents for finding a home.