: The central focus is the unconventional "father-son" relationship between Kumatetsu and Ren.
: A human boy who struggles with inner darkness and his dual identity between the human and beast worlds.
: A high school student in the human world who helps Ren reconnect with his human roots and education.
: Kumatetsu’s rival for the lordship, a noble and respected warrior with his own disciples. Key Themes
: A powerful but temperamental bear-like beast who learns as much from Ren as he teaches.
