User blog comment:Xilinoc/Ch. 553 - Frozen Cross/@comment-7079377-20131017232010/@comment-5695542-20131020004930

@Sternritter M

No i am thinking of The Saketsu and the the Hakusui "These two points are commonly considered pressure points" which are on their back where Isshin was cut. http://bleach.wikia.com/wiki/Chain_of_Fate#Shinigami