Rieusion

リュシオン, Reyson, White Prince (白の王子)
Reyson Japanese: Rieusion is the third prince of Serenes and one of the few to survive when it was destroyed. He is the younger brother of Rafiel and the elder brother of Leannehttps://anilist.co/character/171987/Learne. He dislikes all beorc as they are to blame for the destruction of Serenes. Source: Fire Emblem Wikihttps://fireemblemwiki.org/wiki/Reyson