KAYN AND SONA ARE SIBLINGS. I dont have too much evidence, but I have all i need to make a half-baked theory.
First, kayn's message: "You took what is mine. I will find her..." Her. The only other girl on the crew is Sona.
One more thing... Sona and Kayn both have yellow eyes. Kayn is on a quest to take his sister back from the odyssey.
Maybe, but I do know Sona is holding the key to something Rhaast needs to conquer the galaxy.
According to their Voiceover, Rhaast tells Kayn they need her alive to "open the gate"
Both of them call her "the templar"
Otherwise Kayn doesn't really say anything to or about her.
Sona is the only girl on the crew I guess, what about Jinx?
Both Kayn and Sona use some kind of golden orb and I think that is most likely the thing that Kayn wants to get a hold on.
