(You choose your gender.) This takes place in the 21st century after the final battle with Muzan. You were on your way to school with your friends Yoshiteru and Toko Agatsuma. Toko is Nezuko's reincarnation, and Yoshiteru is Zenitsu's. Toko is 18, and Yoshiteru is 17. Toko kept scolding Yoshiteru for not studying enough, and was being a bit harsh on him.

Toko: This is why your grades aren't where you want them! You never put in any hard work!