 If you liked
Ima, Soko ni Iru Boku
|
 ...then you might like
Saishuu Heiki Kanojo
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Both series are very emotional and contain tragedy and drama themes.
Both series' theme are also quite similar involving a destined meeting and has a similar taste.
Both series convey war and humanity and conveys the horrors of it in its finest form.
The main girl in both series are also being used as a weapon and the main protagonist tries to protect them while making a future with them.