Replacing Mithra would be the riskiest play of his entire fucking lifeYeah, that's pretty much it. Tsukishima needs to know the person to get the maximum amount on who to replace and unless he's replacing Mithra, Asura is beating your ass, plain and simple.
So that's pretty much one of the weaknesses of BOTE, he chose the wrong person to replace in Byakuya's memories and Byakuya is absolutely the type of person who would murder anyone, even Rukia, if it came down to it.
