Hrist

Hrist is the second eldest of the 13 Valkyrie sisters. Her name means "the quaking one" and also "the roaring one." She becomes a sword for Kojirou in the third battle.

Hrist has a bipolar personality, which causes her to switch between being calm and gentle to being violent and aggressive.

(Source: MAL News, Shuumatsu no Valkyrie: Record of Ragnarok Wiki)