Yui Kusanagi

She is a high schooler who is a member of her schools kendo club she also practices the traditional martial art Iaido she came from a family of Shinto priest and priestess where they have been living and managing the towns local shrine for generations. As the main heroine she was drafted by Zeus to teach the warring mythological gods about the value of being a human and at the same time make them graduate from the Forbidden Academy which if she were to fail she would live there for eternity. Each mythological gods have their own nicknames for her two of which were Fairy a moniker given to her by Apollo because of his attraction to her and weed a derogatory remark that Takeru often refers to her because he is annoyed by her presence. Source: Otakustreamers