According to a recent announcement, all US visa applicants from Japan must include info on all SNS accounts used within the last five years.
Archived version: https://archive.is/newest/https://www.tokyoweekender.com/japan-life/news-and-opinion/us-visa-applications-from-japan-require-disclosing-social-media-history/
Disclaimer: The article linked is from a single source with a single perspective. Make sure to cross-check information against multiple sources to get a comprehensive view on the situation.
This is horribly invasive and everyone should make burner accounts to give them instead. We need to sabotage the fascist Border Police and all their efforts to harm people