User blog comment:WhiteArmor/Sosuke Aizen/@comment-1332195-20100514105129

If he were to do a 'Gaiden' (I think that's the term) arc, it'd boil down to Gin, Isshin, or Aizen (I'd say Isshin, as we've already had Aizen's and Gin's pasts in TBTP). Maybe the Urahara shop gang, to show what they were planning between TBTP and the present.

Don't know how to call how it'll end, coz that self-imposed deadline is fast approaching. Hope you don't rush it and screw us all over, TK.