User blog comment:Xilinoc/Ch. 561 - THE VILLAN/@comment-1268838-20131211115621/@comment-5398287-20131212050213

If I recall correctly, Shunsui wasn't able to take out Starrk as easily as he did until, well, when he did because Katen Kyokotsu's personality interfered with his ability to use its techniques. "I don't like to play with her' et al.