Genkai

An ancient martial arts legend residing in a sprawling temple, this formidable Reiki master serves as a stern yet devoted mentor to Yusuke Urameshi. Though she initially hosts a tournament to find a successor capable of defeating the demon Rando, she ultimately adopts Yusuke as her student, teaching him the powerful Spirit Wave technique. Despite her advanced age and diminishing physical strength, her immense spiritual authority remains feared across both human and demon realms.