The Asakura heirs are so lucky and "screwed" at the same time...first Yoh gets to be with Anna, and although she sincerely loves him, she's still one hell of a pain to handle...and noe Yoh's son has to deal with such an Anna-look-alike who wants to marry him too...
Well, at least we can still hope this "Anna's" enthusiastic nature will mean she is not a demonic as her previous counterpart...