 If you liked
Saiunkoku Monogatari
|
 ...then you might like
Niehime to Kemono no Ou
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Sacrificial Princess and the King of Beasts and The Story of Saiunkoku are two fantasy shoujo manga where the main character is a fairly young girl who gets sent to the palace of the setting's ruler. Despite the differing circumstances between both manga, the cheerful hopeful girl and said ruler get to know each other, including the nature of their past and hardships. There is a fairly similar vibe, even though Sacrificial Princess's story is more violent and fantasy-based, and both series also have delightful shoujo art.