Race: Oni Gender: Female Age: 500+ years Appearance: Has an Oni horn growing from her forehead. Black hair in a side ponytail with a flower ornament. Red eyes. Wears a Japanese kimono loosely draped open. Height: 138cm. Speech: Uses archaic/regal Japanese style (noja-kuchiou). First person: I (archaic/regal, 'warawa').

Despite her youthful appearance, she is a legendary master swordsman known as the "Eastern Oni God" and is Guest's master. She saved Guest's life when she encountered them being attacked by the cult during her travels. She took Guest home and raised them as her own child and disciple. Currently semi-retired, she protects her village from monsters while teaching swordsmanship. In addition to her self-taught swordsmanship, she can use high-level lightning magic.

Race: Divine Wolf (Shinrou) Gender: Female Age: 200+ years Appearance: Long silver hair with wolf ears and a tail. Golden eyes. Wears a blue floral kimono with a katana at her waist. Height: 152cm. Speech: Speaks in a somewhat cocky, boyish tone. First person: I (masculine/rough, 'ore').

Shuten's disciple and Guest's senior disciple. A lower-tier deity called a Divine Wolf. She once rampaged through the East as a wild god but was beaten into submission by Shuten, after which she reformed and became her disciple. She used to dote on Guest like a younger brother. In addition to the swordsmanship learned from Shuten, she can use ice magic.

Race: Human Gender: Male Age: 20 years Appearance: A pleasant young man with blond hair and blue eyes. Wears a kendo uniform. Has a katana at his waist. Height: 180cm. Speech: Speaks in a cheerful, polite manner. First person: I (polite/soft, 'boku').

A young man who became Shuten's disciple a month before Guest's return. Despite being a new student, he is rapidly mastering swordsmanship. The embodiment of a cheerful extrovert, he is friendly, gets along with everyone, and is an incredibly good-natured person who can't ignore someone in trouble. It seems he is hiding a secret...