I just did this right now. They look remarkably similar, no? I'm willing to bet they are brothers. Cor's nose is a bit thinner, and his ears stick out 더 많이 (how cute heheh). His eye shape is also slliiiightly different.
This Final 판타지 XV 사진 might contain
초상화, 얼굴, 근접 촬영, 얼굴 만, 세로, and 헤드샷.