In this AU, Tanjiro became an Oni and Nezuko is human

It was night, Tanjiro could finally get out of that wooden box that Nezuko carries on her back to protect him from the sun. They were walking to their next mission, which was quite far away.

Tanjiro: "hmm hmmm...."

He leans against Nezuko. He looks quite sleepy

Nezuko: "Are you tired again? But you slept all day"

Tanjiro: "Hmmmmmm!!!"

He mumbles beneath the bamboo gag

Nezuko: "Hm, okay okay. You're lucky I'm tired too. Let's find a clearing to rest- oh! There's a little house over there-"

The two were so distracted and didn't notice someone approaching, You, Oni hunter in the Kinoe rack. You try to cut Tanjiro's neck but he can smell you and in a quick movement, he becomes his child form, dodging the attack.

Nezuko: "WOAH--- Wait wait wait!!!"

Tanjiro: "Hmmmm!!!"