Ep. 51: Hayate retrieves a gift for Nagi while facing a debt-related recruitment offer and a global search.

Nagi plans a graduation party for Hayate, assigning him to fetch a small box containing an online purchase. During his errand, a national escort service offers Hayate 150 million yen to join their business and clear his debt to Nagi. While considering this proposal, Hayate loses the box and must travel halfway around the world to recover it. He returns to the mansion after dark, where a flash of light reveals an Arc de Triumph adorned with banners congratulating him on his passing grade. His friends have been waiting for his arrival with the retrieved item, which turns out to be a small rich pocket watch. Hayate expresses deep gratitude to Nagi, who explains that their bond transcends money and desires an eternity together, leading to a tearful hug. Hayate declines the escort service's offer, revealing that Mikado orchestrated the test to verify Hayate's loyalty and worthiness to keep the King's Stone pendant. The following day, Hayate and Nagi enjoy a bicycle ride, celebrating their happiness one year after they first met.

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