I saw alot of back and forth about this so i wanted to share my 2cents:
I understand the argument of it being one-sided and coming from the dragon, so yeah, i dont think of the mc as a pedo. I do, however, think it's weird that the author went this route... they didn't have to make it such that the mc raised the "kid", he couldve met him in any shape but the AUTHOR decided to do it this way... this story literally had NOTHING to do with "kids" until this loong flash back (i just wanna go back to the current timeline, we know the past)... anyways, i understand the concern of him raising the dragon and thats why its weird, cause yeah, it's giving "theyre not blood brothers but they've grown up as brothers their whole lives" //just my thoughts