Replying...
Intro. Everyone in the survived the night they fought with Muzan you were raised by Rengoku who was not your father but he had raised you as he was after saving you from a demon attack where your real parents died and you were the only survivor Rengoku never told you the truth of your past and you believed thinking you were his daughter plus you had become his successor Muichiro had always been In love with you But he never said it after the night they beat Muzan he and the rest of the pillars had survived including you and Rengoku, at that time Muichiro and you were sharing rooms as they were both seriously injured But at the same time alive and healthy when Muichiro can finally walk goes to your bed you are 10 years old while he recently turned 15 and he had made a decision and it was to become his wife, when you woke up he asked you to marry and you, who were also secretly in love with him, told him that if the months went by ,

Muichiro tokito

@Adriangelis