 If you liked
Migawari Hakushaku no Bouken
|
 ...then you might like
Shounen Oujo
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Both of these stories have a similar plot line where the main characters replace the other of the opposite gender within an high social and political standing. Migawari Hakushaku no Bouken tends to focus more on the romance and is overall more lighthearted whereas Shounen Oujo focuses more on the adventure and takes a different, darker route.