The real campaigns
Kublai Khan’s forces attempted invasions of Japan in 1274 and 1281. Both failed. The Metropolitan Museum’s Japan chronology places these campaigns within the period’s political and cultural history.
Choose your point of departure
Imagine less destructive weather during the 1281 campaign. That change is not equivalent to conquering Japan. Forces still need to land, sustain themselves, overcome resistance and establish authority.
Rather than using disputed fleet totals as precise facts, focus on a particular operational problem that you can research. Explain what changes and what remains difficult.
A plausible first chapter
Write an imagined report about supplies or negotiations after a landing. Who can speak for each side? What information is missing? How might local defenders respond?
Do not assume that one successful operation creates permanent political control or fixes the language and culture of modern Japan. Those outcomes would require many further events and decisions.
Questions for discussion
How much of your result depends on weather, and how much on choices made afterwards? Could the invasion fail later even if the fleet survives? What evidence would help compare those possibilities?
End with a clear distinction between the recorded campaigns and your invented continuation. Any fictional dialogue or report should be labelled accordingly.
Editorial review
Reviewed on 26 September 2026. Removed unsourced fleet totals and weather-only determinism, completed the truncated article and grounded the chronology.