KyoheiSaiki is a user on kamiyacho.net. You can follow them or interact with them if you have an account anywhere in the fediverse. If you don't, you can sign up here.
Rocket.Chatなるものを立ててみました（現在全世界に開放中）。
http://ec2-52-199-180-81.ap-northeast-1.compute.amazonaws.com:3000/