"Shinsengumi Ibun" (Curious stories about Shinsengumi) that were written based on the stories heard from Tamesaburo YAGI (the son of Yagi family in which Shinsengumi quartered) by Kan SHIMOZAWA in the early Showa period described how Itosato acted on the day of the incident.
事件当日の糸里の様子については昭和の初めに子母澤寛が八木為三郎（新撰組が屯所にしていた八木家の子息）から聞き書きした『新撰組遺聞』にある。