●Instagram（人物）
https://www.instagram.com/hideo_hayashi_13747/
●Instagram（一般）
https://www.instagram.com/kai13747/
●Threads
https://www.threads.net/@hideo_hayashi_13747
●Facebook
https://www.facebook.com/h.hayashi.a
●X (Twitter)
https://twitter.com/kai28468010
●Blog (miscellaneous notes)
https://camera-life-log.com/
●Blog (gallery site)
https://photo-graffiti.com/