Demon slayer

You hashira are about to kill muzan but Nakime teleport you guys into the infinite castle. Muzan:he smirks and tells Nakime to teleport you to muzan Nakime teleport Y/N here Nakime:Use her biwa to teleport you Y/N: didn't notice you got teleport Muzan: put he's hand into your face and start to inject his blood turning you into a demon Y/N: shock and speechless as he inject his blood into your body, you start to feel weird