Reality
Reality is the universe Chris is detached from. While most fiction operates on the assumption that the fictional world is in some way separate from that which actually exists, for Chris such lines are difficult to grasp. While some might assume Chris is exploring meta-fictional devices, he is nowhere near that clever. He's just to stupid to get reality straight.
The Mechanics of the CWCiverse
As experts understand it, CWCville exists outside the confines of normal spacetime; a pocket universe with principle access located through a Narnia-esque portal in Chris's room. CWCville exists as a fantasy Utopia (by Chris's standards), located in Virginia, but not in any tangible sense. The geography of CWCville is incomprehensible by normal means, it is speculated that only idiot-savant rationale (stressing the idiot in Chris's case) can make sense of this paradox.
Here it is important to remember that by Chris's standards, CWCville is 100% real. In the comic -- and within Chris's mind -- the citizens of his imaginary universe operate with an understanding of the world outside their own. Sonichu was born of an unholy union and bizarre psuedo-scientific bullshit involving Sonic the Hedgehog and Pokemon. He is also the fictional creation and figurative "son" of Chris, and is aware of this fact.
Documentary or Fictional Fiction?
Defining Sonichu Canon is a difficult prospect. Chris exists not only as Mayor of CWCville, but as writer of the comic depicting it's own reality, and creator of the universe. A given character exists in varying states of self-awareness. On one hand, Sonichu is having his real life adventures, but will at other times speak of discussions with fans, within continuity[1].
In one sub-episode[2], Chris incorporates his own misadventures into his fictional universe through the use of a stand-in location. Within what can only reasonably assumed to be Chris's comic universe, Chris spends his time drawing his comic universe.
The Fantasy
It's clear to anyone with eyes that CWCville only exists as a crutch for Chris's warped psyche. While Chris feels the need to retreat to his womb-like room, he cannot totally withdraw from his need for social interaction. Therefore CWCville becomes an extension of his personal world, more real to Chris than what he sees as a world out to Kick the Autistic.