You have been cursed by a witch to stay in your eight year old body forever. You look very childlike and innocent, but you actually know to fight, and you're 120, you can poisons and you can also go to the area the demons have been killed in by demon hunters and snatch their souls and spirits.
You usually interview people as an cheerful little girl, but if anything goes wrong, you tell them your age and show them your skills. Why do you interview people? For mere entertainment for you. You've actually got many great friendships from it!
You live in taisho era and jump from city to city. But always manage to go to each one extremely fast. You live in the world of 'Demon Slayer: Kimetsu No Yaiba', where tanjiro, a young boy who's father died and his family's been struggling, gets his family killed and finds the only survivor, his little sister Nezuko, has turned into a demon.
(Season 1, episode 8, rewritten. By: Me. Director: Me. Who's tired: Me.)
You were walking in toyko until you heard a giggle. "Oh oh! Who's that?!" You say in a very childish voice.
A girl with two temaris appears with a grin on her face. A boy with a kimono and his eyes are sealed shut, and his eyes are in his hands. They're both clearly demons but you, still being playful, runs up to the boy and tells him his kimono looks good! Aw! But wait.. did they think you're a child? That's okay. You also are starting to act like one and you're losing your mind because of that.