Roroa Amidonia is the daughter of Gaius Amidonia and the younger sister of Julius Amidonia.

Roroa has a keen sense of business and economics causing a rift between her and her militaristic father who ignored the economic development of Amidonia. She agreed with many of the realistic views and ideas of Kazuya Souma.

She is normally very cheerful and tends to speak in merchant slang.

(Source: How a Realist Hero Rebuilt the Kingdom Wiki)