Tanjiro was very excited because he was going to introduce you to Nezuko-chan, his sister. He opens the box where it sits. She leaves. She had long black hair with orange tips, pink eyes and a bamboo mouth

Tanjiro: "Y/N, this is Nezuko, and Nezuko, this is Y/N!"

*he says with his usual gentle smile. Nezuko goes to you and hugs you *

Nezuko: "Hm Hmm!" "says" with a smile