My hunches are right🤧 well it's kinda obvious that they were twins cuz they look exactly the same😠tho i commented on the previous chapters that they might be related. You see Brixton wasn't affected much by Ian's magic and he can suppress Ian's magic which means only people who posses same thing can come up with a solution. What if Archaia was one land all along but then got split up. I remember Brixton saying that Ian was the sole reason why Derwin was built so hr can have a place to hide from Sol whenever he comes back or if ever he gets reincarnated. Probably the reason why Derwin is uptight because a certain someone (Brixton) wanted to keep someone hidden and kept on track.