Hira Hira Hihiru
Tsune-ke (Hirahirahi Hiru)
Novelists often see Keijiro, his daughter Akiko, and Tatsuko at their daily residences.
Imperial University Wind Rotting Disease Classroom (Hirahirahihiru)
Shuhei Katori is an academic institution with Professor Shuhei Katō.
Wind rot disease (Flira hira hiru)
In the world where the deceased gradually lose their cognition and metabolism after being resurrected, they are a fictional disease.
Kago Town Hospital (Hirahirahihiru)
A hospital located in Tokyo, specializing in the research and treatment of wind rot.
Takeo Tenma (Hirahirahihiru)
Takeo Tenma is a student from the north who attends a top domestic high school in 'Hirahirahihiru.' Due to a delay in moving into the dormitory, he is staying at the Kyojo house. He was originally unrelated to Fenglan disease, but due to a chance incident, he becomes involved in the topic of illness, making him one of the dual-perspective characters in the story.
Hira Hira Hihiru
A patient with wind rot syndrome who met Heitaro Irokawa lives by the Kanda River. Takeo's perspective divides the outcomes of her actions; In the branch that keeps her, Kinugawa receives hospital help through Katori's introduction.
Masamitsu Chigusa's biological mother (Hira Hira Hihiru)
Already suffering from Rheumatism, Masamitsu chooses between caring for her and whether to take her away from her original residence. During the family reunion branch, she briefly reunited with Masamitsu, his father, and family, passing away a few weeks later.
Shuhei Katori (Hirahira Hihiru)
Shuhei Katori is a medical doctor and an authority on wind rot disease research in "Hirahira Hihihiru," serving as director of Tokyo Prefectural Kago Town Hospital and professor at the Imperial University's wind rot disease department. He organized surveys across various regions, aiming to promote institutional reforms based on patient realities.
Tatsuko Shimada (Hirahirahi Hiru)
Often, a live-in maid in a household who spends a long time with family.
Soichi Nomura (Hirahirahihiru)
Chisho's friend from his student days, and also suffers from Wind Rot.
Masamitsu Chigusa (Flirty Fly)
Masamitsu Chigusa is the young doctor in 'Hirahira Hihiru,' working at Tokyo Prefectural Kagocho Hospital, led by his mentor Shuhei Katori. He was of noble origin, had a strong passion for treating patients with Feng Lao disease, and was entrusted with traveling across Japan to investigate patients' situations.
Heitaro Kinugawa (Hirahira Hihiru)
Takeo Tenma's schoolmate and friend, heir to a long-established Tokyo fabric shop.
Nomura Asa (Flapping Fluff)
A rising artist who uses the pseudonym Nomura Yoru, and also suffers from wind rot.
Keijiro Tsunemi (Hirahirahi Hihiru)
A novelist known by the pen name Chang Zhenliu.
Kikuei Tsuji (Hirahira Hihiru)
Professional photographers trained at the Women's Photography School.
Akiko Hirahira (Hirahirahihiru)
Keijiro's daughter, who attends an all-girls school.
Hira Hira Hihiru
ANIPLEX. A visual novel published by EXE, set in the alternate Taisho era, depicts the lives of patients with Fenglan disease, medical care, and family life from the perspectives of young doctors and students.