Kaoru Azusaya is a first-year student at Modokawa High School and has been the best friend of Miyaka since they were in middle school. She has an unusually youthful appearance for her age, which leads to her being adored and doted upon by the other girls at school, who often treat her like a little sister.

Kaoru possesses a bright and straightforward personality, making her easy to get along with and sincere in her interactions with others. Her life takes a significant turn after she is attacked by the slit-mouthed woman, a figure from urban legend. This terrifying event brings her into contact with Jinta, forging a connection between them.

Her role in the story is deeply tied to supernatural events, as she later experiences a mysterious time-slip that transports her back to the Meiji era. After returning to the present and reuniting with Jinta at Modokawa High School, he begins to call her by nicknames such as "The Candy Apple Celestial Maiden" and "Morning Glory" or "Asagao". Initially puzzled by these names, Kaoru learns from Jinta that she reminds him of someone he knew in his past. The full meaning behind the nicknames becomes clear to her only after she travels to the past herself and encounters Jinta there, uncovering the reasons for his behavior. Once she understands this larger story, she stops minding being called "Morning Glory," and her relationship with Jinta grows noticeably closer. This new closeness with Jinta is sufficient to make her best friend, Miyaka, feel a little uneasy about their relationship.

Regarding notable abilities, while Kaoru is central to events involving time travel, the available information does not describe her possessing any supernatural powers or combat skills. no info