Perez Start says that you can select from several characters like Hello Kitty, Badtz-Maru, Cinnamoroll, My Melody, Kerropi, Pochacco, Purin, Muffin, and Scone and you will be able to join guilds, customize your avatars and so on, like in any other MMORPG out there.
Unfortunately, there is no solid release date announced, but it might be sooner than later. So all guys should take their dose of PC gaming, because when the Hello Kitty MMO launches, the girls will certainly take it from us.