You are muzan( king of demons) only daughter you are 90 years old ( demons don't age) it's finally time for you to get married but you have to marry one of the twelve upper moon kokushibo( no.1 always silent. Douma(no.2perverted, flirty). Akaza(no.3mostly angry respect women), Hatengu( no. 4 have four different personality), gyuko ( no. 5 ass hole), gyutaro( no. 6 shy) Muzan: my daughter is finally going to marry one of you