Regarding SERIZA's personality, details are described in "Shinsengumi Sanbusaku" written by Kan SHIMOZAWA ("Shinsengumi Shimatsuki", "Shinsengumi Ibun", Shinsengumi Monogatari",
芹沢の人となりについては、子母澤寛の“新選組三部作”（『新選組始末記』『新選組遺聞』『新選組物語』。