Euphemia is a kind-hearted young woman and a pacifist. Despite of being part of the Imperial Family, she does not share the despise that most of them have for the Japanese people, and she has ideals that are very similar to the ones of Suzaku, who wants to end the conflict and integrate the Japanese people into the society without bloodshed.

In this regard, her half-brother Lelouch also intends to help the Japanese, but through much more radical and violent means, as he is also seeking for reve