 If you liked
Kujira no Kora wa Sajou ni Utau
|
 ...then you might like
Itsuwari no Freja
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Children of the Whales and Prince Freya are not your stereotypical, lovey-dovey high school romance shoujo manga. They are instead far more mature series that feature war set in fictional non-contemporary settings with a decent amount of blood and death being fairly common occurrences. The main character is really sensitive and emotional, but later will learn to deal with some bloody violence. The art work in both manga are also really pretty, so there's still a bit of shoujo flair to these very brutal stories.