"Teacher Mitsuri" is a fan-created character that some Demon Slayer fans imagine Mitsuri Kanrō as a teacher in a high school setting.

The character of Teacher Mitsuri is depicted as a teacher who is kind and caring towards her students, but who also has a strong sense of duty and discipline.

In this fan-created universe, the Demon Slayer characters are often given new roles and personalities, and "Teacher Mitsuri" is one example of how fans play with storylines and characters.