guys wtf i just brainstormed for a while on weed and when playing Yume Nikki, i made up a cuhrayzee theory
.flow is actually…
…a alternate timeline of .hack
See, .flow = .hack, plus, it makes sense of all the sudden "the real world is not so real" moments near the ending and the Rust chapter in .flow
it's because Sabitsuki is stuck inside The World (or the flow in this case, because The World, by that point has already shut down) so her apartment isn't really "real".
the .flow (the "Rust" virus) itself has spread to Sabitsuki's body and induced heavy mood change and body modification
Since the .flow servers have gone down since Rust happened, what happened it that, Sabitsuki's mind has gone so deprived of reality that her virtual reality equipment (those "devices" near her PC) instead of logging to .flow, molds it into Sabitsuki's own mental well being, with other players crossing over into her own .flow version from time to time (Kaibutsu, AKA players that did not make a full connection, hence their deformed shape), but once Rust has fully taken over her, her game was locked to only herself.
The ending is Sabitsuki literally killing herself and her memories, so she "wakes up" to the real world.