Orion Muno

Background
The eldest son of Baron Muno and the younger brother of Soruna and Karina. He's expected to be the next lord of Muno after his father. Orion is engaged to the daughter of the succeeding duke of Oyugock (he's the lord after Duke Oyugock and before his son, Tisrad) born from a different mother than Ringrande and Sera.

Oyugock Capital
Orion Muno meets Satou, who he couldn't meet in his Muno terriotory because he was studying in the Oyugock capital. He's weary of Satou as he believes that Satou is playing with the feelings of sister, Karina, who accompanied him to Oyugock. But clears up the misunderstanding by stating to him, that they do not have a romantic relationship, and when Karina enters the conversation, he gets her affirm this, in front of Orion.