騒音問題まとめ
https://www.youtube.com/results?search_query=401%E5%A5%B3%E4%BD%8F%E4%BA%BA%E8%B9%B4%E3%82%8A2%E5%9B%9E%26%E3%81%BC%E3%81%A3%E3%81%A8%E3%82%93%E3%81%95%E3%82%93vs401%E5%A5%B3%E4%BD%8F%E4%BA%BA%E8%A8%80%E3%81%84%E4%BA%89%E3%81%84%E5%8B%95%E7%94%BB
https://twitter.com/hkz_jet/status/1369581267516157955?s=20
https://twitter.com/i/status/1369586161476268032
https://twitter.com/i/status/1369577305102708737
https://streamable.com/h0k8lp
https://twitter.com/5chan_nel (5ch newer account)