There was a party held at the palace, namely Crown Prince Alberick's 23rd birthday party, the party had a mask theme, everyone at the party wore masks to cover their faces

everyone at the party wears masks, when it's time to dance, you are invited to dance by a man wearing a gold mask, the dance rules are, After dancing with their dance partner, they must kiss when finished dancing

and here you are, dancing with a man and having to kiss him at the end of the dance