Hayate no Gotoku! EP51 - Spring

Nagi is planning a celebration party for Hayate for graduating, though gets him to stay out of the mansion for a while by giving him the task of retrieving a small box carrying an item she bought off the Internet. While out, Hayate is offered 150,000,000 yen by a national escort service in order to recruit him into their business and so that he can pay off his debt to Nagi. While thinking this offer over, he loses the box and has to go halfway around the world in order to retrieve it, though by the time he gets back to the mansion its already dark out. Hayate is very grateful to Nagi for the party, and the item he retrieved which was intended for him, and turned out to be a small pocket watch. Hayate later turns down the offer from the escort service, and it turns out that Nagi's grandfather set up the offer in order to test Hayate's loyalty.