講演会を開催しました

https://twitter.com/fumiviolin/status/1606901468887646211…

https://twitter.com/fumiviolin/status/1604424377902120960…

https://twitter.com/fumiviolin/status/1644561162108022784…

https://twitter.com/fumiviolin/status/1637704915773722624…

https://twitter.com/fumiviolin/status/1631975753427582976…