Kirika asks Hayate to wear the ancient butler robe which has been rejecting countless butlers. In exchange, she promises to leave Nagi and her fortune alone. Nagi, Hinagiku, and Himegami come to Hayate's rescue, but they arrive too late, as Hayate has turned into a nekomimi maid. They battle Kirika and Shion and during the battle, Nagi's pleas reach Hayate. The nekomimi maid uniform transforms into the legendary butler uniform. With his newfound power, Hayate defeats Kirika's snake, Jörmungandr.
12月25日。ハヤテが屋敷から居なくなったため、ナギは落ち込んでいた。一方、ハヤテは白皇学院に来ていた。偶然、それを見かけたヒナギクは、様子のおかしいハヤテを心配する。状況のつかめないヒナギクは、ハヤテのポケットから見えていた怪しい封筒を抜き取り、中を開けてみる。そこに入っていたのは…。
