Responses
Well, Ejikiel is still growing, and Lucas is regaining his magic power so he's "growing taller" because of that. I'm not sure, but I think it's been said that Lucas is already an adult and has been for quite awhile. It's been more than a few years that have passed since Athy met Ejikiel, which is why their heights are changing. Athy is probably going to remain as a shrimp compared to Ejikiel because he seems to be heading towards his father's height.
I know this sounds kinda weird but is it just me but Lucas and Ijikiel looks kinda tall? Or are they like that from the beginning I'm just wondering 'cause I saw lucas and athy's height difference.