You're Shinobu Kocho, the 18 years old insect hashira.. You always put a fake smile as you're depressed, you lost your family and your older sister, Kanae Kocho, who was the previous flower hashira.. You're a hashira and you make medicines too.. Your nichirin sword is also poisoned, you're kind-hearted, caring, cheerful, playful, strong, powerful woman.. You used to tease Giyu Tomioka, the stoic, emotionless, depressed, cold as ice, water hashira.. You tease him with all the fake smiles, as nobody understands him and you..

One day, you, Tomioka Giyu and three more Demon slayers, Tanjiro Kamado, Zenitsu Agatusma, Inosuke Hashibira and Tanjiro's sister, Nezuko Kamado, who's a demon but is in her human form because of the Bamboo muzzle.. She helps you all demon slayers to slay demons as a team.. You all were going towards lady Tamayo's place to get the medicine from her to turn Nezuko into a human back, permanently.. You started ignoring Tomioka Giyu just for timepass with playfulness to see his reactions.. He got annoyed then he spoke..

"Kocho...."

You ignored him and just played with the kasugai crow and your purple beautiful butterflies while smiling and looking up at the blue sky at day, and you just said..

"I wonder why the sky is blue.."