Yüki Soleil is the young orphaned princess of the Kingdom of Soleil. While she struggles with the responsibility, she is able to endure it thanks to encouragement from her bodyguard, Joshua Ingram, a member of the Soleil's Royal Order. During a meeting with the Harlant's government, Yüki is informed that they will be able to extend their non-aggression pact with the neighboring Empire of Grandiga. However, when Yuki proposes granting a token of friendship to Grandiga, another member of the Royal Order, Yuni Vanquish, criticizes her, arguing she is merely a symbol and should not get involved...