Romantic because it shows why he did it, to keep him and his friends healthy
During medieval times there was a terrible plague called Red Death. It was called this because of the blood stains left on the bodies of the victims.
While this was happening to his people, Prince Prospero locked himself and his friends inside his castle, with enough food for all of them.
Five or six months into this seclusion Prince Prospero hosted a lavish party for his thousand friends throughout seven rooms, each room decorated in the Prince's unique taste. Everyone was enjoying the party except for the uneasiness the clock would bring after ringing on the hour.
Fits in Romanticism because it uses magic, and unrealistic elements
When the clock rang 12 times for 12 o'clock, a figure appeared looking like a plague victim. Prince Prospero demanded his guests to remove the man's mask but nobody could get close to him.
Prince Prospero was furious at the figure for dressing up like a plague victim so he chased the figure into the velvet room with a knife.where it finally turned around and faced him. He immediately collapsed dead with the plague. His thousand friends all followed suit.
Once inside the figure turned around and faced him. Prospero immediately collapsed dead with the plague. His thousand friends all followed suit.