Paktmeister: Der Nullmagier und die Göttinnen

Luke Vane, the lowliest janitor at Asgard Academy, mocked by everyone as a "zero-mana" reject. Until one day, an ancient grimoire opens before him, granting him the ability to force a bond on any female being alive. The academy's coldest, most beautiful prodigy becomes his Pact Beast. The goddesses fight over him... and he just sits back and wins.