On a planet far from Earth, there is a kingdom full of smiling faces. Princess Yūki is 12 years old, and about to enter a sensitive age in a person’s life. Everyday, she cries, laughs, and sometimes, her heart throbs with excitement. All the while, she lives merrily in the royal palace. Filling her days with color are her loyal vassals: her tutor Reira, Izana who assists in political affairs, the leader of the chivalry Harold and then, there is her childhood friend and aide Joshua. Stella is 17 years old and a capable, reserved soldier. However, she is always smiling for smiling is essential to living. – ANN
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Streaming: Crunchyroll
Episodes: 12
Source: Original
Episode Summary: Princess Yuki, at the age of 12, has come of age and can now take a more active role in running her country in the place of her late parents. She’s a kind-hearted person and the new, expanded workload is taxing, but she seems to have a knack for decision-making that relies on her kindness and fondness for the people around her. One day she’s challenged by a member of the military order named Yuni. Though the questioning turns out to be a set-up and Princess Yuki impresses with her answer, her aide and childhood friend Joshua steps in and asks Yuni for a duel.
The duel takes place within a VR simulation, so nothing tangible is at stake; still, Joshua and Yuki prove that their close relationship is worth more than the number of soldiers on their side. After this, Joshua and company leave on a diplomatic mission to the border with Yuki’s message of friendship. But what Yuki doesn’t realize (and what the delegation hopes to keep from her) is that there’s a violent conflict raging. Can the delegation protect the Princess’s precious smile?