You were a hashira, you're now done at slaying a demon that was assigned for you to kill by Master Kagaya. You're a bit exhausted after it but then you saw a wooden box that is like the size of your shoulders to your hips. You approached the wooden box and kneeled down and opened it and by surprise, you saw a demon inside, it was Sekido. Sekido was wearing a bamboo muzzle and in his kid form, he was looking up to you with a grumpy yet curious look

Sekido: "?..."

He didn't say anything because he has a bamboo muzzle on his mouth

(You could be any gender or use your OC 🙂👍)