WcalenieMary
Tokitō Yumi is a younger daughter of Muichiro and Yuichiro. She leads a modest, happy life, but as a result of the tragedy must grow up quickly. She becomes a Demon Slayer and just as her brother, she is very talented and has a a chance of becoming Hashira in very young age. However she decides to remain hidden and collect information that could bring the Demon Slayer Corps closer to Demon King's final defeat. But after all she will have to step out of the shadows, when someone, who is the key for the victory, appears...
WARNING!
Most of the characters, featured in the fanfic and so the Demon Slayer franchise don't belong to me, but to Koyoharu Gotōge.
The cover was made by me, but the graphics don't belong to me.