Is it possible for Damien (?? I forgot how to spell his name) to be the ML nephew and not his son?? Now I may be wrong because I haven't re-read this story in a while, but didn't the ML brother live with their father because he didn't want the ML?? And if i'm right, its more believable that the brother was forced into having a child with his sister (or cousin). Which could be why the brother killed himself leading to the MC killing off all the people who knew about his families "creation"
This reminds me of that one episode in dragon ball z (More specifically G/GT) when pan was turned into a doll