@dsno Hello! I'm sorry that I don't speak Japanese so I will write to you in English and hope you can read it or have it translated.
I am one of the moderators of https://weirder.earth and we are getting a lot of spam accounts from your instance following users on our instance. They all seem to be automated because they follow a very consistent pattern. Would you consider closing registrations until the spam attack stops?
Thank you. #WeirderAdmin team.
A community that skews thoughtful and weird. Everyone who abides by the code of conduct is welcome, thoughtful weirdos most of all! :)