 If you liked
Uruwashi no Yoi no Tsuki
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 ...then you might like
Naisho no Kawaikochan
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If you're looking for a shoujo manga featuring a masculine-faced female lead who is frequently referred to as a "prince" by others, both series have something in common.
As I write this, Uruwashi no Yoi no Tsuki has already reached six volumes, while Naisho no Kawaikochan is still a one-shot planned to become a series, so I couldn't make many plot comparisons other than the two having a drama filled with the female lead's concerns about showing her girlish side in front of the male lead.