@R4NDOM_AUTH0R oh and for Kny boys x Reader you can have Y/n start her training with Urokodaki or who ever is helping her rn maybe have her fail at water breathing or whatever breathing at first, then have her develop her own breathing, make her train AGAIN, make her cut the rock, and have her go to final selection where she encounters Tanjiro or someone else (btw these are all suggestions, you don't need to write any of this and you can take some ideas from this if you want ❤)