Zipang

The modern Japanese destroyer Mirai is headed for naval exercises when an unusual weather disturbance carries it to the Battle of Midway in 1942. Its crew has advanced weapons and knowledge of the war's outcome, but any intervention could rewrite the history that produced them.

Officer Kadomatsu saves an Imperial Navy officer who should have died, and neutrality becomes increasingly difficult. Protecting lives now means confronting the possibility of destroying the future they hope to return to.