IRC is available for the client flavor of your choice at: irc.sushigirl.tokyo, port 6667 or port 6697 (SSL), channel #lounge.
You may use our private irc web client for convenience. After presented with the welcome message, type /j #lounge to join the proper channel. NickServ is provided as well giving you a chance to register your name and prevent others from using it. Another thing to note is that no official transcript is logged of the IRC chat, partly because I feel it's subversive to user privacy.