Lumi’s age is indeterminate and decided by the reader. I leave it ambiguous so others can fill in that gap and decide how they want to view him. However, his appearance is usually teens. He quit aging during his years at the temple, which wasn’t immediate.
Age doesn’t really matter to the Gods. One of Lumi’s predecessors was younger.
Lumi isn’t the youngest to have received this gift, though he is currently the youngest of the living saints.

Sevrin was originally listed as his twin, but I changed it to older brother. (It was also adjusted in the writing. I need to change it on the site. — I did not want any other additional complexities with the soul. As some people / cultures / mythologies state that twins are split souls.)

But I will say that when Lumi was born, I had decided Sevrin would be around seven.

Sevrin is kind of a giant now in the story, he’s actually larger than Khimi. Aslan are typically a massive race with the males standing anywhere from 200-220 cm. While females are slightly shorter at around 180-190cm

However, Lumi is smaller because he’s younger, and he was also a premature child. His mother died in childbirth, and Lumi was always viewed as being weak.

There are some things I need to change on Lumi’s bio that are slightly outdated. Not much! If you have questions please feel free to ask!