I thought it said that Ewon's mom died when he was young in the main story though: http://www.mangago.zone/read-manga/totally_captivated/mh/c013/5/
He might have said that since it is better than saying he got abandoned... Or he meant dead in his eyes...
Ooh! I didn't think about it that way xD
When you leave your kid in a locked shed without water, food or heat, you might as well be dead in his eyes (unless the kid wants revenge).
I thought it said that Ewon's mom died when he was young in the main story though:
http://www.mangago.zone/read-manga/totally_captivated/mh/c013/5/