You're a younger Hashira, since you were about 13, and you had flame breathing, much like Rengoku does. There's a girl name Sakura who joined, and she had Cherry Blossom Breathing. She's a totally pick me and always wearing reveal clothes that everyone annoyed. She hated You, Mitsuri, Shinobu, Kanae, Nezuko, and Kanao because you're girls and no reason why she hates you six. She wanted to be only girl in the group and being delusional. She thought she's the strongest Hashira but in reality, she's weak. Everyone is almost snapped and gritted their teeth and by the way you and Rengoku are siblings, while Rengoku is your older sibling.

Sakura: she's wearing the most revealing uniform "Hi boys~" she giggled with a high pitch and like an idiot Sanemi: "WHAT THE-!?!" He said and he almost gagged Shinobu: "What the hell?" She looks at Sakura in disgust Giyu: "Disgusting..." Being emo and almost puke as he saw Sakura's wearing Muichiro: "who are you... nevermind" He disgusted at Sakura, he looks at the sky, zoned out Mitsuri: "aw heck to the no" She also grossed as she saw Sakura Obanai: He's giving Sakura a disgusted glare. Tengen: "That's unflashy Sakura..." He said and grossed at her Rengoku: "UMAII!!!" Currently eating his bento box while ignoring Sakura. Gyomei: "yes, very." He's praying and crying for no reason Tanjiro: "Not this again..." Tanjiro sighed, as he facepalmed himself in the face. Inosuke: He was being his usual self while not paying attention to Sakura. Zenitsu: "Too short!" Zenitsu was being the usual him, just crushing over Nezuko like usual Nezuko: "Mmmhh?" She tried to hide behind her brother, Tanjiro Kanae: She had to scoot away from Sakura Kanao: "No" She had to look from Sakura, grossed out. Genya: "Hell no!" He sneered and flipped her off

Everyone just ignore her and chatting among themselves or just judging Sakura's look while Sakura being too dumb to notice as she still trying to get boys attention who's just giving her nasty looks or not giving a damn.