Kojuro Katakura is a retainer of the Date clan. He fights alongside his master and would do anything to protect him. Kojuro had trained with Masamune and eventually earned himself a menace in the form of Hisahide Matsunaga. When Masamune was badly wounded, Kojuro avenged his loss by charging for the warlord then taking back the weapons stolen by Matsunaga.
Kojuro is the main protagonist of the story. With Mitsunari dead, he at first began a gay relationship with Masamune until Amy Rose came from the sky while he was at a lake with his master. Normally, Kojuro fights with a sword in his left hand.