With an account on koyu.space you'll be able to follow people on any koyu.space server and beyond.

Hello comrades,

koyu.space is now indefinitely in invite-only mode after hitting more than 10k users. Since I can't assure proper service quality (in terms of server stability and moderation) above that limit I made the decision to close registrations. If you know someone who's on koyu.space ask them to send an invite. If you want to have your own koyu.space you can follow the instructions here to set up your own server, you'll still be able to communicate with koyu.space users, because of the underlying standard protocol.