After Izumi's butler, Kotetsu, realizes that Hayate is a boy, he becomes enraged, and tries to hunt down Hayate. Later, Nagi gives Hinagiku the watch she prepared for her birthday and then becomes kidnapped by Kotetsu, who says to have Hayate rescue her. Meanwhile, everyone surprises Hinagiku with a surprise birthday party and asks her to sing "A Cruel Angel's Thesis". After being asked where Hayate's present is, Hinagiku misunderstands the letter of a challenge as a way for them to be alone...