Kosagi

She is a Dragon Knight who turned her love toward Karasu to hatred due to his betrayal. She has hatred for Haruka as well for causing Karasus betrayal seeing her as nothing more than an item. Her wanting to understand forces Kosagi to cuts her pipeline so she can stay to see Karasu die. But in time she became to understand the truth and eventually returned to Lacryma to destroy the main computer to halt the invasion. Kosagis spin weapon appears as a bowlike device bursting from her right arm and can fire energy blasts. Kosagi is Japanese for egret. Wikipedia