Hiyori Kusakabe

is a girl who works at Bistro La Salle. She is a Native worm born from two Natives who had mimicked the parents of Soji Kusakabe, essentially making him her brother. She transforms into her Native Worm form . 
==History==
===Background===
Hiyori Kusakabe was born the child of two Native Worms that had murdered and impersonated the parents of Soji Kusakabe, Souichi and Satomi Kusakabe. At the time of their deaths, Satomi was pregnant with a girl that would have been named Hiyori. However, because they were killed, the little girl was never born. Thus, the two Worms, having taken their mimicked identities' memories, had their own child and named it Hiyori while raising it entirely human. On the day of the Shibuya Meteor Strike, Hiyori's parents along with herself were separated. As Hiyori emerged from the rubble, she saw a young boy about her age with a ZECT belt, approach where her parents were, about to kill them. When she cries out and begs him not to do so, he ensures that Hiyori will be safe and that he will always be at her side. 
Hiyori would latter suffer from events that would scramble her memories from this incident. 
===Adulthood===
By the age of 18, she has become to believe that during the meteor crash seven years ago, the young boy had killed her parents. However a period of uncertainty, she concludes that Soji Tendo, who owned an identical belt, would never do something like that. After seeing Gatack wear another belt and discovering that he was Arata Kagami, she also began to doubt him. In the end however, she decides to trust both of them as they have helped her so much. She carries a green crystal that originated from Area X, ground zero of the meteor crash. She seems to be able to talk with and read the emotions of inanimate objects, such as drawings and machines. She's quite clumsy and tends to zone out while working, resulting in complaints by customers. She is also impudent towards others as well as initially being bad at socializing with others. Through several mishaps and accidents, she was able to discover the identities of all the Riders besides Drake.
Later in the series, Hiyori is approached by Rena Mamiya, who informs her that herself was a Worm. Unable to believe so, she is later attacked and ambushed by several Worms, later completing her transformation into the Sisyra Worm itself in the presence of Soji and Arata. When she discovers that Soji's parents looked identical to hers, Soji eventually told her the truth of what happened seven years ago, and promised to protect her as her older brother. 
During episode 33, the energy charge from the Hyper Zecter sent her along with Soji Kusakabe to the edge of time and space. The Hyper Zecter later appeared in the normal dimension, showing one of Hiyori's drawings to Tendo and Kagami.
She reappeared during episode 38, being led away by Soji Kusakabe, at the edge of time and space. She returns to the real world in episode 43 to defend Dark Kabuto from Hyper Kabuto, stating that she no longer desires to live in the human world. Ultimately however, after a compelling speech by Tendo saying that she will not be hated in the human world, even though she is a Worm, she abandons Soji Kusakabe and returns to the human world. However, she is then attacked by Dark Kabuto. After being saved by Tendo, she returns to an almost normal life, and begins making her own menu and dream of owning a restaurant come true. During the epilogue, she returns to her normal life in working at the Bistro, and now has Jyuka as a sister.
==As Worm==
 is Hiyori's alter ego, Sisyra Worm surfaced after Hiyori was in danger of being killed by Worms. Like Tadokoro, she is a Native who chose not to attack humanity.
==Video Game Appearances==
===Kamen Rider Break Joker===
Sisyra Worm appears as a playable character with other Riders and monsters in Kamen Rider Break Joker.
==Personality==
Despite being a girl, she uses the pronouncation 'boku' (boyish way of saying 'I') instead of watashi/atashi (formal way of saying 'I'), and may come off as rude to others since she addresses them as 'omae' (mostly used by men to refer the person they are close with as 'you' compared to women) regardless of gender and age, as commented by Tendo, who advised her not to refer her customers with 'omae'.
She is a bit of a slowcoach, as shown in Episode 1. She was waiting for some saleswomen to stop conversing with one another when she wants to buy some jewellery from them before Tendo arrive and tell those saleswomen that does not even bother to look at their customers. She is also quite misanthropic, questioning to others why she should be the one to do the cooking or come to a party.
She also seems quite emotionless at first, but it is later revealed she can smile and also get angry, especiallly when Kagami skips his part time job, most of the time.
Despite being like that, she is shown to be friendly and caring, as when Gon (Yuriko) was kidnapped by Kageyama, she was willing to do anything to save her. She was also willing to help Gon when the latter wants to apologize to her partner, Daisuke.
== Abilities ==
* Master Chef: To be added
*Skilled Artist: To be added
==Statistics==
*Height: 216 cm
*Weight: 115 kg
Appearances: Kabuto Episode 31-32, 43-44
==Behind the Scenes==
===Portrayal===
Hiyori Kusakabe was portrayed by ,as child Hiyori was portrayed by , who will later portray as Chizuru Hoshino in Kamen Rider W 3 years later.
===Etymology===
*The name comes from "sisyra" which is the scientific name given to spongeflies.
===Concept Art===
Sisyra Worm was designed by .
==Appearances==
==References==
==Navigation==
Category:Kamen Rider Kabuto
Category:Allies
Category:Worms
Category:Fly Monsters
Category:Relatives
Category:Heroines
Category:Kabuto Characters
Category:Female Monsters