Seigen Amawaka (天若 清弦 Amawaka Seigen?) is an exorcist and former White Tiger (白虎 Byakko?) of the Twelve Guardians. He is also the father of Mayura Otomi and the ex-husband of Yukari Otomi. He also mentored Shimon Ikaruga, Rokuro Enmadou and Yuuto Ijika.
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