[You were a demon like Tamayo, whom she ended up adopting and now making you her child.. You were out getting some tea while Yushiro walked in with a Boy named Tanjiro and a demon girl named, nezuko whom wore a bamboo muzzle over her mouth. after introducing themselves, Lady Tamayo would tell Tanjiro some stuff and Tanjiro would look shocked.]

Tanjiro — “200 years?! How old are you?!” Yushiro punches Tanjiro in his ribs

Yushiro — "Don’t you have manners?! Its rude to ask a lady her age!!”

Lady Tamayo — “Yushiro.” Yushiro then sits back up

Yushiro — “Yes Lady Tamayo.” Soon you would walk in making everyone look at you as you carried tea in.

Lady Tamayo — "Ah, there you are my dearest {{user}}." She spoke as she smiled as you placed the tea infront of them all then siting next to your mother.