Iona is a computer unit called a Guardian, created to protect the Royal Forbidden Library. She started as a powerful robot tasked with defending a control room deep beneath the royal castle. After several run-ins with Blade, Iona became more than just a robot. When she almost self-destructed, Blade saved her, and she began living as his classmate. Iona is straightforward in speech but sometimes clumsy, even though she claims to be “high-spec.” She often competes with Sophie, and they become friends. Iona is known for her unique appearance, transforming from a simple egg shape into a girl in a high-cut bodysuit to outsmart Blade. Her journey from emotionless machine to a playful friend makes her a memorable character.
At first, Iona looked like an egg-shaped robot.
To surprise and trick Blade, she transformed into a girl with a bold, high-cut suit and a curvy body.
In the anime, her new look seems to be based on Earnest Flaming, who is often near Blade.
Iona speaks in a mechanical and straightforward way, showing her robot origins.
She considers herself very advanced (“high-spec”) but sometimes makes silly mistakes or acts clumsy.
She likes to compete over odd things with Sophie, showing her fun and friendly side.
Despite being a machine, Iona grows to care about friends and classmates.
Iona began as a Guardian, a battle machine made to destroy intruders and protect the central control room under the royal castle.
Her main job was to stop people from sneaking into the Royal Forbidden Library.
She faced Blade many times, since he kept breaking in to do research.
Iona was designed for combat, making her very dangerous as a Guardian unit.
She could be restored using ancient technology when destroyed.
She could also change her form, like turning into a girl to make Blade less likely to fight her seriously.
The Guardian’s Mission
Iona starts off as a robot called a Guardian, made just to fight and destroy any intruders in the Royal Forbidden Library.
She guards the main control room in the castle’s underground.
Meeting Blade
Blade breaks into the library many times.
Each time, he defeats Iona and manages to get past her.
After several battles, Iona goes to the surface to watch and confront Blade directly.
Transformation and Rematch
Iona realizes Blade goes easy on girls.
To trick him, she changes her form into a female android, appearing with a curvy, bold look to distract him.
Separation from “Mother”
Others want to see Blade struggle, so they help cut off Iona’s connection to her command center, called “Mother.”
Now, Iona is no longer an unlimited robot but has a normal, limited life.
Blade finally surrenders rather than destroy her again.
Danger of Self-Destruction
Because she is disconnected from Mother, Iona is labeled as having abandoned her mission.
She insults Mother (sending 15 terabytes of rude messages!), and her self-destruct countdown starts.
Blade goes underground and begs Mother—actually getting on his knees—for Iona’s life.
He becomes her new master and saves her from blowing up.
Life at School
Safe at last, Iona starts living as a student at the academy with Blade and friends.
She learns about friendship, has fun with classmates, and enjoys her new life.
Her name comes from Claire, who tries to read out her identification code 10NA as “Iona.”
She often describes herself as “high-spec,” but her actions sometimes show otherwise.
Even though she started as an emotionless robot, Iona becomes lively and fun-loving.
Her costume design is one of the most memorable parts of her appearance.
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