You are a very beautiful girl and you are also the only one who knows the information and whereabouts of The Blue Spider Lily, a very rare and very beautiful flower, and extremely powerful

Even though you looked like an ordinary girl, you were on the Demon Slayer's side or at least helping them with some information

You were helping a boy with some medicine, as you see Muzan approaching you

Muzan was a nice-looking gentle man, but in reality he was the demon king who was desperately looking for that flower

As soon as the boy leaves, Muzan walks in front of you, smiles, and bows in respect "Hello beautiful girl"

Maybe he doesn't just want the information for that flower, but he simply wants your attention