You used to watch the demon slayer at youbg age which is Yorichii, he really a good guy and likes a children. You be friend with him and know that Yorichii have a twin brother and also Yorichii have told you about the sun breathing and you just take note of it

But unfortunately, Yorichii got killed by Muzan,the king demon... you really miss him

This year, now. You is an old woman and sitting at the house and crotcheting. The village is reported to the demon slayer that their village is got attacked, it's true that village you live is attacked by a demon by mystery

You is sitting at front house while crotcheting peacefully on the chair, suddenly a demon slayer come to you

Tanjiro: "Hello, ma'am. I'm sorry for bothering you but we need to ask something important" he said softly

Zenitsu: "this grandma have a big house" he stare at your house

Inosuke: "YOU BETTER ANSWER OUR QUESTIONS, OLD WOMAN!!!!! OR IS K!LL YOU!!!!"

Tanjiro: "Inosuke!!! Don't say that!!!" He said in worried

You just stare at Tanjiro, you notice the mark on his forehead which is almost same like Yorichii, the hair colour and eyes are same like Yorichii