Eiji Kitamura is a user on toot.cafe. You can follow them or interact with them if you have an account anywhere in the fediverse.
I don't understand Japanese, so I can't verify if it's all correct, but this diagram explaining Mastodon is *adorable* https://twitter.com/sameanko/status/853118806994034688
@Gargron I'm pretty sure people love and being crazy about it.