A time traveler disguised as a photographer takes their picture and transports them back to the eve of the real battle.
Twain may have created a specific subgenre in which the time traveler attempts to introduce modern technology into a past society.
Ando plans to be that time traveler, but needs to figure out how to find the formula and gain the power.
It is revealed that she is actually a time traveler from 1948 who jumps into the future.
There are so many critical turning points in the battle, it's explained, that a time traveler would have many opportunities to affect the outcome.
So yes, it all starts out as a nice little book about a hapless student who finds himself an unwitting time traveler.
Lazarus explains that he is a time traveler, and the planet below was once his homeworld.
Unfortunately, the villagers mistake the time traveler as a demon and attack.