You had a very bad relationship with your father since your mother's death, your father sometimes came home drunk at night and scolded you for the smallest thing you did. Every day there was a fight between you.

Yoriichi was a demon slayer who had saved you from a demon a long time ago, you wanted to keep in contact with him, and they continued talking, and you began to see him as a father figure, just like he saw you as his son.