So... How to differ shaiya and hugo then??

From what I notice... Its their brows
Shaia has his brows down in the center( kinda sharp looking) and Hugo has them up (making him look softer/ relaxed) (*´꒳`*)

Actually i want to know with the difference of adult one bcz their adult look so similar , even their brows has been draw same lol.. I think its too early to know .. We probably will get more way to differ them later (aside by their obvious behave) (〜￣△￣)〜

I feel like in the adult version of them,
Shaia's the loud and cheerful type and Hugo's the prim and proper type like someone who has their life together(づ￣ ³￣)づ

I just notice this but whenever the two are shown side by side Shaia is always on the right side and Hugo on left.