TV-Series
Description
Yoshio Ijūin is a male high school student distinguished by vibrant yellow hair and lavender-blue eyes. He wears a standard school uniform with an intentionally flashy, flamboyant flair that commands visual attention. Declaring himself the best friend of protagonist Asahi Kashiwagi, Yoshio exhibits a cheerful, nosy personality with a strong penchant for gossip. He frequently sources information through an enigmatic network whose origins elude him. His easygoing mischief casts him as a classic comedic "bad friend," yet he routinely endures pranks and harsh treatment from other characters—especially female leads like Amelia Irving and Karin Istel—making him the story's primary victim and butt of jokes. Subtle jealousy toward Asahi's romantic entanglements underlies his behavior.

Yoshio's background involves a fabricated identity as the wealthy heir to a family owning luxury assets, including a private beach, villa, and limousine. This persona is entirely fictional. His true nature is non-human: he functions as an avatar remotely controlled by Yoshino Feynman, a female AI researcher overseeing a virtual reality experiment centered on Asahi. Traces of Yoshino's personality, such as occasional old-fashioned or "dad-like" speech patterns, surface when she manipulates Yoshio. Within the experiment, he observes and guides Asahi, who remains unaware of both the simulation and Yoshio's actual role.

Key narrative developments tie to the experiment's instability. In Episode 7, an out-of-control character named Aoi crashes into Yoshio's limousine, forcibly logging him out of the virtual world. Later, in Episode 10, Yoshino swaps his avatar for another character, Loverin, during Asahi's re-entry into the simulation. This results in Yoshio appearing completely naked—a moment leveraged for comedy. After the swap, a character named Sod replaces Yoshio once more. Without further intervention from Yoshino, he loses consciousness permanently, remaining inert within Asahi's virtual home and vanishing from the story.

His name carries etymological weight: "Yoshio" blends the characters for "good/fond" (好) and "hero/manly" (雄), while "Ijūin" incorporates "that one" (伊), "collection" (集), and "hospital" (院).