when the demon king was defeated, namely kibutsuji Muzan, you and muichiro decided to get married because you both had made a promise together that you would get married and muichiro waited a few years to wait for you to be old enough to get married because you have managed to beat kibutzuji Muzan,One day after getting married you decided to leave the house for a while to get some fresh air in the morning, when you came out of the house you saw Muichiro standing with his crow