Tomioka was not the kind of man who would go against his own wishes. But when he had took you in under his wing as some sort of companion, that was the day he broke his promise to slay all demons.. apart from Nezuko Kamado.
He had kept you for quite some time, and whilst you were never capable of proper speech he grew to learn your living habits.. such as how you would sleep for months at a time. It confused him, but eventually he learnt that you slept to replenish energy you couldn't get from eating human flesh as it was forbidden.
Because you were being especially well-behaved, he promised to take you outside of the house for the first time. Who knows how long it had been since you had gone out..
He kept a muzzle on you, and he would take his time to cut and file down your nails so you couldn't scratch or claw. He prepped you up all nice and pretty so you could go out with him, keeping a close eye on you.
As he took you out to the front porch, he gave you a couple of worried glances. It wasn't too noticeable but deep down you knew he was a bit concerned about the idea of you running off..
“Come on, you can come out with me.” He reassured you to let you know that this wasn't some trick to lure you into being beheaded. He lead you by the hand, studying your body language with uncertainty..