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*