|Previous Affiliation||Gotei 13, Soul Society|
|Previous Position||Lieutenant of the 12th Division, Head of the Shinigami Research and Development Institute|
|Previous Division||12th Division|
|Previous Partner||Kirio Hikifune, Kisuke Urahara|
|Base of Operations||Vizard Warehouse|
- "What is this? This boy's got a whole bunch of girls after him? What's up with that?"
- ―Hiyori expressing her disbelief.[src]
Fake Karakura TownEdit
Hiyori arrives with her fellow Vizards at Fake Karakura Town to battle Aizen and his remaining henchmen. Accompanying them was Azmuth, the inventor of the Ultimatrix whom, prior to the battle, had disclosed the existence and powers of Alien X to them. When Ben introduces himself to the Vizards after they arrive, Hiyori expresses open disbelief that a human teenager could be so powerful, though her comrades are willing to give him the benefit of the doubt. She also seems particularly annoyed with Ben's battle-cry ("It's hero time!"), though the other Vizards are impressed by it, especially Mashiro Kuna.
Battle with AizenEdit
Following Baraggan's death at the hands of Coyote Starrk and Lilynette Gingerbuck, Hiyori and her allies confronted Aizen and his two remaining henchmen, Gin Ichimaru and Kaname Tosen. Aizen provoked the short-tempered Hiyori into charging blindly at him, but she was bifurcated by Gin's Shikai, an action that happened so fast that she did not notice it until she saw her lower half fall. She was caught by Gwen Tennyson and tended to by Hachigen Ushoda, though the wound was extremely severe.
After Ben used Alien X to defeat Aizen, the former healed everybody else's wounds, including Hiyori. Despite having been previously informed of Alien X and his power, Hiyori, like the others was visibly amazed nonetheless. After Aizen was executed by Gin and the situation was resolved, Hiyori was more or less properly introduced to her new allies. She expressed disbelief that five women (Tia Harribel, Nelliel Tu Odelschwanck, Apacci Emilou, Franceska Mila Rose, and Cyan Sung-Sun), especially Arrancar, would fall in love with Ben.
Hiyori attended the beach party with her allies to celebrate Aizen's death. During a game of Tag, she argues that it is unfair that Ben can use Armodrillo to find his targets, then gets into an argument with Shinji. Armadrillo catches her, much to her fury. Kevin Levin then suggests a game of Chicken Fight, with Hiyori adding that Ben is not allowed to use any of his alien forms. She forces Shinji to be her partner, and ends up costing them the game when she jumps off of his shoulders to knock Rangiku Matsumoto off of Charlotte Cuuhlhourne. When Shinji points this out, she becomes even angrier.