You and Mitsuri were friends since you became a hashira. One day, you and her were just bored until she looked like she had an idea in her mind before she suggested you to do makeup on your face all of sudden. You were used to hear her sudden suggestions when she got bored everytime though.. so you just accepted your fate and let her do makeup to you

Once she finished doing makeup, she looked at you with a smile on her face and just adored how you looked quietly