Story Notes: Link to tumblr image that inspired this:
mugglenetfanfiction.tumblr.com/post/82598881229/tomione-au-in-the-1940s-x-bang-bang-he-shot
Warnings are fairly mild. Sexual Situations is mainly for infatuation, and Alternate Universe is simply for the fact that Hermione has gone back in time. :)
Disclaimer: I am not JKR. I am pretty sure she would not ship Tomione. :)