Board Thread:Theories and Speculation/@comment-27924662-20160409212201/@comment-27924662-20160412201405

@killman kusanagi has same thickness even on extending but incase of totsuka, you are pulling out the sword's volume (that sake from the bottle which itachi's Susanoo's holding )so it means one can pull out a sword as fat as samehada from that bottle or as thin as sasuke's sword. this is the change in shape and size I am taking about. i am not sure about piercing too,'perhaps the sword can pass through anything' or may be not but one thing is sure it's a really handy one given the fact that it is ethereal so even with small force itachi can easily pierce through someone.(well by the way are you sure it's only by piercing that totsuka blade can do sealing or is the cut enough i mean they showed that sealing happens by piercing but maybe it can happen with single cut too)