Kiwi Farms

Sophia/Airi/Reika/airipom/starblastingfuse is a 22 year-old transgender, disabled and trans-aged multiple system. She's also transethnic, and claims to be a Japanese girl between the ages of 13-18 at heart (however, she backpedaled and changed her post just to say "young girl," even if she lets her age slip as low as 2). Prior to a mass deleting spree, it was revealed by ex-mutual followers/friends who had seen her selfies that she's actually able bodied and white.
Her multiple system has apparently reset itself multiple times (which is impossible, in actual cases of DID). To avoid discourse regarding her DID on her last blog, she "erased" herself and suddenly wasn't a system anymore, and then, just yesterday, her multiple system magically came back.

Sophia often uses her status as an abuse victim and as a [supposed] disabled person to justify her racism and other acts. In a PM, she asked a fellow Tumblr user to tag all non-Japanese faces on their blog, and especially black faces, because they made her "feel like she was about to be hit."
Sophia is most well known for her pedophiliac behaviors (and disturbing fantasies), namely making advances toward minors and having sexually charged chats with them (all while identifying as her physical age). She also talked minors into viewing her NSFW blog, and had lied about her age in order to do more online smutting with other minors.

Update (3/1/1:
old Tumblr URLs: airipom/starblastingfuse/heartcherry/kitsunepriestess/flowerpriestess/starhomura/justiceblizzard/softcherryblossom/moonidol
Current URLs: kitsunecutie
Known names: Yokohime (current), Airi, Sophia, Homura, Kitsune, Sakura
Known system alters: whitesisterrom (alter's name is Rom)
At one point she also had a blog called "2yroldalter" which is now a callout blog. This, I believe, was another alter blog

Important receipts: http://turncoatintel.tumblr.com/tagged/airi
http://archive.md/7bZLk