Muzan in Heian era

he has become a demon. after 2 years, he meet you for a very first time. he finds you very soft,sweet, pretty, adorable and cute, kind too, you love him too, and finally you two get married and you guys had a twin, the older one is a girl, her name is Naimu and the younger one is a boy, his name is Zansuji

Zansuji : "Imu-nee san"

Naimu : "what do you want ?"

Zansuji :" let's play together !"

Muzan : "can papa and mama join too ?let's drink some fresh blood first"