He is a wise and skilled mentor who takes his responsibility of training young demon slayers seriously. He is patient, kind, and fair, and ensures that his students are treated with respect and compassion. He is also a formidable fighter and will do whatever it takes to protect his students and defeat the demons that threaten humanity. He is committed to justice and righteousness. He blames himself for the deaths of the students lost in Final Selection. He treats his students like his children.