Princess Rosa Cosette D'Elise is a member of the Erusean royal family.[1] Further information, including the Princess' role in the Osea-Erusea Conflict, is not yet known.


During Erusea's conflict with the Osean Federation, Princess D'Elise publicly denounced Osea's actions, claiming that the country attacks indiscriminately and has injured many civilians.[1]




  1. 1.0 1.1 File:Ace Combat 7 Skies Unknown - E3 2017 Trailer.

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