Yua is a professional and by-the-book agent, remaining levelheaded even in dangerous situations. She displays a great degree of cunning in her interactions with both Aruto and Isamu, manipulating both of them to suit her own ends. Yua shows signs of a cold nature, but otherwise shows a great deal of restraint. Unlike Isamu, Yua harbors no hatred for HumaGears, but she sees them as nothing more than mere tools that could simply have their data backed up if corrupted, with no inherent value beyond their use as labor.

However, this doesn't mean that she won't use the HumaGears for her own goal, as she nonchalantly hacked a HumaGear sent by MetsubouJinrai.net to resume its quest to attempt to kill Aruto and record its performance for data collecting purposes. She is also quick-witted enough to steal the Mammoth Zetsumerisekey without Jin knowing before it's too late.

Despite this, Yua does have a sympathetic heart underneath her cold and stoic demeanor, as when Isamu got poisoned by Horobi, she cried and was worried about him, despite the two not always getting along. After Jun Fukuoze callously shut down the HumaGear in hospitals to protect Hiden's stock price and PR image, Yua broke her calm facade and pleaded to Aruto to reverse the order and put the androids back online as it would condemn hundreds of people to die without medical aid due to the short-staffing of human doctors. When Yua's secret on observing Little Assassin was busted, Yua sadly warned Isamu that she might betray him one day as Isamu knew that Yua had a strong relationship with ZAIA's CEO.

Yua's favorite sushi is tuna nigiri with soy sauce.

• Shot Riser
  • Valkyrie
• Zero One Driver
  • Valkyrie