Hiyori is a girl with long straight black hair, burgundy eyes and a fair complexion. As a Toji, she is often seen wearing the uniform of Heijou Institute, as well as black tights.
She has a serious, professional, cool and stoic personality, has a strong sense of duty and will do anything to achieve what she has decided to do. She refuses to give in to the influence of others and tend to hiding her real feeling, therefore developing misunderstandings about those surrounding her.
In stark contrast, she is well-versed in house chores, and can cook well. According to her, she learned how to cook while tending to her ailing mother.
Hiyori originated from Nara prefecture, where she lives in a farmside home that also has the family dojo. Her mother, former Toji Kagari Juujou (十条 篝), passed away one year before the present time, and she has since carried a grudge against the Origami Family.She joined Heijou Institute at some point before the series start, right after Maki Shidou graduated and became Elite Guard and obtain the First Seat.
After visiting her family home in Nara, Hiyori traveled with teammate Sanae Iwakura to Kamakura City to represent Heijou Institute in the National Swordsmanship Tournament. She dominated the tournament with her speed, defeating Ayanokouji's Hozumi Yamazaki and Osafune's Ellen Kohagura in one-on-one matches. Later that day, Hiyori would face Minoseki Academy's Kanami Etou in the tournament's decisive match. However, Hiyori did not show an interest in the decisive match; instead, she used the opportunity to engage the head of the Origami Family, Yukari Origami. Her attempt failed, putting her at the mercy of the Origami Family Elite Guard, but Kanami helped her escape, with both of them leaving the tournament venue before any pursuit can happen.
Hiyori was baffled by Kanami's decision to aid her in escape, but chose to part ways with her as she already had plans for if her attempt against Yukari would fail. However, she was unable to shake off Kanami's resolve. Hiyori and Kanami would later spend the next few days together in hiding, with Kanami's classmate Mai Yanase allowing Hiyori to escape with Kanami after the latter had revealed that there is an Aradama hiding beneath Yukari Origami's hair.
Minoseki Academy's president, Ema Hashima, through her acquaintance Rui Onda, assisted Hiyori and Kanami by allowing the two girls to stay in her apartment unit. This stayover, however, was short-lived when the Special Sword Administration Bureau managed to track down the two fugitive Toji. Sayaka Itomi, sent by the president of Renpu Girls' School, attacked Hiyori and Kanami, and it took a combined effort to bring down Sayaka and her "soulless sword".
Hiyori and Kanami separated from Rui as the latter's apartment unit was flocked by policemen, with the two fugitive Toji heading to Ebisu. Upon arriving there, Hiyori once more attempted to go separate ways from Kanami, but an unexpected confrontation by Kanami against Ellen Kohagura and her partner Kaoru Mashiko forced Hiyori to reunite with Kanami. A team effort from Kanami and Hiyori then allowed them to escape the two students from Osafune. Hiyori would later expose more of her knowledge about the Great Disaster of Sagami Bay and the involvement of Yukari Origami in the incident and the death of her mother.
Expert Swordsmanship: As a representative Toji of her school she is quite skilled in kenjutsu, enough to make her way into the final match of the National Swordsmanship Tornament, hold her own against the First Seat of Origami Family's Elite Guard and two time National Champion Maki Shidou, abeit barely, and Maki is holding back. Mai noted that Hiyori's kenjutsu skill is not match the level Kanami proccess, and Maki easily see through her skill in a short period of exchanging blow.
- Swordsmanship Style: Kashima Shinto-Ryu (鹿島新當流?) - A traditional school whose various techniques show a strong influence from the kenjutsu of the Warring States period. Techniques can be used not only on swords but on spears and naginata, and are based on actual fighting techniques used in the battlefield at that time.
Immense Speed: Hiyori's fighting style focus more on speed, because of that her Jin'i is very fast and agile. Her strongest burst of Jin'i even faster than the speed of a bullet.
Immense Stamina: She is shown to have a good amount of stamina, capable of fighting for a long time, re-using Utsushi in a short amount of time.
Utsushi Proficiency: Hiyori is capable of maintaining Utsushi for a very long time.
Household Chores Skill: She quite good at doing Household Chores, and can cook well.
Okatana: Kogarasumaru (小烏丸?) - Hiyori's sword which bears a distinct shape called "Kissaki Moro Ha Zukuri", which consists of two cutting blade edges. Legends say that this sword was given to the Ise Grand Shrine by a large crow that was sent to visit the shrine.She is the current wielder of the swords which her mother previously wield it.
Analog Spectrum Meter: She have a spectrum meter which inherited from her mother, capable of sensing the presense of Aradama by the raction of Noro itself, it is capable of sensing every nearby hostile Aradama. It is being noted by Hiyori that it is being banned from produce and use by Origami Family.