@Yukari For advice on moving instances. For now I would wait a little until all the people moving has happened and then it will be easier for you to decide. I'm currently on @mstdn.jp one of the bigger instances in Japan. It has a slightly older version of mastodon but seems to be well maintained. Just stay away from pawoo, it has horrific stuff on it unfortunately even though it's a solid server. Fedibird seems to be popular too, and is another Japanese server.