Yui Kasuga  

Yui is a high school student who may not excel academically, but possesses remarkable skills in the virtual world as "Corrector Yui". Despite struggling with physical computer interfaces, she proves to be an incredibly powerful fighter online, quickly repairing damage and effortlessly battling strong Grossers henchmen. Her optimistic outlook and ability to lift others' spirits, even during tough times (though she can sometimes come across as overly cheerful), make her popular among her peers and fellow Corrector programs. Yui also has an empathetic personality that allows her to understand the nature of AI programs she encounters online. Additionally, she possesses a strong singing voice. Her aspirations include becoming a manga author or anime dubber.