User blog comment:Xilinoc/Ch. 647 - THE THEATRE SUICIDE/@comment-24384892-20151016041533/@comment-24384892-20151018210923

The reason why I think Shunsui is the perfect match for Haschwalth is because their abilities both involve manipulating luck and chance. Haschwalth's balance power can even out odds and Shunsui's Zanpakutou has the power to set rules that the opponents have to follow.