Old

Much of Old's personality before the war between the sisters remains a mystery. In the past, he had a streak of cockiness, believing himself to be the better of Meikai's familiars, fit to wield the Sacred Sword. Upon discovering that the responsibility would be entrusted to Tatsumiya instead, he became irrevocably wounded. Deeply begrudged that Tatsumiya was given the responsibility, Old would come to loathe her and Meikai, leading to him to betray the two. Upon encountering Tatsumiya again on the field of battle, Old attacked her with an intense rage for the slight upon his honor. After being sealed with Mikotsuhime for long, Old no longer holds any affection for any — not for his former comrades, his sons, or for the man he previously called Master. The only thing that remains is his desire to avenge himself by harming Tatsumiya, for the scars and the humiliating defeat that she gave him, a grudge that has remained since before he was first sealed In the past, he was one of Meikai's familiars, alongside Tatsumiya. One day, Meikai was handed the Sacred Sword — a sword immensely important to the Blue Sea Kingdom — by The Sea King, ruler of the kingdom. The Sea King tasked Meikai with a difficult conundrum; he would have to decide between the two of his familiars which was worthy of wielding the legendary blade. Having believed that he would reign superior and be chosen to hold the blade, Old became indignant upon the revelation that, instead of him, Tatsumiya would be chosen as wielder instead. Engulfed with rage and jealousy, Old would end up defecting to Mikotsuhime's side. He would later end up battling Tatsumiya, who would go on to leave him covered in his signature scars. Along with Mikotsuhime and other denizens of the Sea of Death, Old was sealed away by Meikai's sacrifice.