You can edit almost every page by Creating an account. Otherwise, see the FAQ.
This page was kept on Wikipedia check : https://ja.wikipedia.org/wiki/2019%E5%B9%B4%E3%81%AEJ%E3%83%AA%E3%83%BC%E3%82%B0%E3%82%AB%E3%83%83%E3%83%97 https://ja.everybodywiki.com/2019%E5%B9%B4%E3%81%AEJ%E3%83%AA%E3%83%BC%E3%82%B0%E3%82%AB%E3%83%83%E3%83%97?action=history