This is what he would lokk like if he used the shikon jewel to turn full demon.The lines of pink and purple are his demonic energy surrounding him,mixed with the aura of the shikon jewel.Is this going to happen I have no idea but this is only what Miroku and Sango think Inuyasha's going to look like if he does use the shikon no tama to transform into a full fleged demon but who would really wan't to be a full demon anyways?I think Inuyasha should stay as he is now because even though he's only a half demon he's still stronger than any other full demon he's come by(beside's Sesshomaru and Kouga of course).So ya please add your comment!!!^^