Or his father is a gangster boss and just want his son back....? (●'◡'●)ﾉ
And his mom is just a mistress. Too cliche?
naaah - more like it she have some power herself - like she know some dirty secret of the father and he can't touch her....or the son....but now something happend, the balance is broken and daddy wants his boy back(I assume that we can start a whole new manga here by ourselves xD)
i think his father death or leave his family because isn't he dream about a man that are bleeding leaving him and his mother???? Σ(っ°Д °;)っ
Interesting theory Kuroko-chi (▰˘◡˘▰)
I think his father join some kind of gangster gang and he make a mistake so they want his son??? ε=ε=(ノ≧∇≦)ノ