|This article is about a/an character in Kamen Rider Blade.|
|Series:||Kamen Rider Blade|
|Ally Type:||BOARD Member|
|First Appearance:||The Indigo Warrior|
|Last Appearance:||Kamen Rider Blade: Missing Ace|
|Number of Episode|
Full list of appearances
Shiori Hirose is a twenty-year-old woman, whom is one of the few remaining BOARD members after it was attacked by the released Undead. She helped the Riders by detecting the Undead on her Undead-searching computer. She seems to care for Kenzaki very much.
She had experienced in detecting Undead since she worked in BOARD. She also possesses superhuman strength as Hirose is able to lift a refrigerator only with a finger much to both Kenzaki and Tachibana's fright. Her father, Yoshito Hirose is the person who responsible for breaking the Undead's seal in a fit of madness, dying in the process.
In an alternate reality where Blade sealed the Joker Undead, Hirose was trying to prepare for her marriage but when a new threat surfaces, she decides to put aside her ideal life and helps the Riders once again by revealing the true identity of Albino Joker Undead. She was last seen celebrating Amane's birthday at the Jacaranda Cafe.