I am the writer of the page "Yasuhiko Hangai" and one the former students of Yasuhiko Hangai. The photo you pointed is my photo and I am the person who have taken the photo. Since I used the photo repetitively in the sciety of IASS (international association), the photo was also used "https://hal.archives-ouvertes.fr/hal-00856863/document" by Rene Motro, who was the president of the IASS at the time. Therefore (since the photo is mine) I believe that no one will claim about the use of the photo in the page we are preparing in Wikipedia. --Kawaguchi K.(会話) 2022年10月12日 (水) 08:00 (UTC)[返信]