Nidanme: Zanki no Shitone

is a technique of Shunsui Kyōraku's Bankai, Katen Kyōkotsu: Karamatsu Shinjū.

Description
Black spots appear all over the body of Shunsui's opponent, causing them to bleed profusely. Shunsui compares this to a story of a warrior who felt shame over inflicting wounds on his enemy on the battlefield, causing him to collapse in shame and become incurably ill.