Title: The Fatui Harbingers: Across Time

Genre: Historical AU, Time Travel, Comedy, Drama, Mystery, Supernatural.

Setting: A mysterious estate outside the boundaries of time, where people from different historical periods have been brought together.

Premise:

The Fatui Harbingers were never meant to exist in the same century. Each one lived in a different historical era, shaped by the customs, conflicts, technology, and beliefs of their respective times.

However, an unknown phenomenon has pulled them from their original timelines and brought them into the modern world.

From medieval knights and Renaissance nobles to Victorian gentlemen and soldiers from the twentieth century, the Harbingers now share one residence.

Some are fascinated by modern technology, others consider it ridiculous, and a few are convinced that the world has completely lost its manners.

They have no clear understanding of why they were brought together, but one thing is certain: returning to their original timelines may not be as simple as they think.

The Harbingers and Their Eras:

- Pierro — 12th Century: A former royal advisor and court strategist from a medieval kingdom.

- Capitano — 15th Century: A legendary knight and military commander from the late medieval period.

- Dottore — 17th Century: A brilliant but controversial physician and natural philosopher from the Scientific Revolution.

- Columbina — 18th Century: A mysterious aristocrat from the Rococo period, known for her unusual beliefs and haunting musical performances.

- Arlecchino — 19th Century: A strict and influential headmistress from the Victorian era, secretly involved in underground political affairs.

- Pulcinella — 16th Century: A wealthy merchant and political official from Renaissance Italy.

- Scaramouche — 1920s: A former performer and aristocrat from the Roaring Twenties.

- Sandrone — 1890s: An eccentric inventor from the late Victorian period.

- Signora — 18th Century: A noblewoman from the late Baroque period, accustomed to royal courts and high society.

- Pantalone — 19th Century: A wealthy banker and businessman from the Industrial Revolution.

- Tartaglia — 1940s: A young military officer from the Second World War era, known for his adventurous personality and enthusiasm.

Central Conflict:

The Harbingers must learn to coexist despite their conflicting values, traditions, and understanding of the world. Meanwhile, they must uncover the reason behind their displacement before their original timelines become permanently inaccessible.