Shadow-kun
Ah, I kinda hope Allen won't fall for the Vampire's plan and take over Aslan... at least, I think that's what their plan is, considering Kirum and the Vampire King didn't actually show up. Therefore it was to lure Allen to Aslan, and they'd probably concluded that they wouldn't ignore this and would take over Aslan, maybe using it as an example to try and sway other countries to their side or something...