Captain Hitsugaya and Harribel use an array of water and ice-type attacks. Since Captain Hitsugaya can turn any water into ice, and Harribel can turn any ice into water, both of their attacks neutralize each other out. But, both of them has a plan to turn the battleground into water, and finish off the opponent in a single blow. As Hitsugaya tries to keep up with Harribel and protect the injured lieutenants (Matsumoto, Hinamori, Hisagi, Iba), he is injured severely from Harribel's Cascada and a Cero. But, when Harribel comments on Hitsugaya not being able to fight at full strength, Hitsugaya stands up and extols at Hyorinmaru being the strongest of all snow and ice zanpakuto, which gives the wielder the control of the heavens. He is then about to unleash his strongest attack Hyoten Hyakkaso. (thetvdb.com)