Kumakura Castle, the site of the incident, is an important archaeological site designated by Saitama Prefecture and is also a place where buried cultural properties are known to exist (buried cultural properties inclusion site). Saitama Prefecture's Cultural Resources Division, taking a serious look at the situation, called for attention on Twitter, claiming that there is a possibility of violating the Cultural Properties Protection Law and Cultural Properties Protection Ordinance. Translated with www.DeepL.com/Translator (free version)

Revisiting the YouTube video issue at Kumakura Castle in Chichibu, Saitama Prefecture and detailing the discovery of artifacts in Tsu, Mie Prefecture