Board Thread:General Discussion/@comment-28630611-20160602161217

Getsuga Tensho is a mystery.We don't know who created it,but we know that it isn't ichigo's zanpakutou skill.From what i understood,getsuga tensho is a manipulation of raw reiatsu(a cheaper version of kido or maybe a complex one)into one attack.I think that the only ones who could think of such a thing are Isshin(he used it when he was fighting white)and Urahara(he is a kido expert so i think that he wanted to develop something more powerful than kido).Maybe getsuga tenshou depends of the user's spiritual pressure and color,for example:shikai ichigo's getsuga tenshou(it reflects old man'reiatsu)-blue and bankai ichigo(it reflects hollow ichigo's reiatsu)-black.But i have doubts about this skill because it looks more like a cero.Maybe Isshin developed it when he was younger. 