*Author's note*

Another story. I can't help it, whenever I read or watch something I get a new idea thus have to write it down before it's buried under newer ones. But after it leaves my mind suddenly I lost motivation.

Anyway, let's back to the main topic. This story, as you can guess from the title, based on Ender's Game. So forgive me if you think the plot is too familiar.

Lastly, this is my first try on the gender-bender genre, it may not meet your expectations.