With World War II right around the corner, intelligence on other countries' social and economic situation has become a valuable asset. As a result, Japan has established a new spy organization known as the "D Agency" to obtain this weapon. Under the command of Lieutenant Colonel Yuuki, eight agents have been assigned to infiltrate and observe some of the most powerful countries, reporting on any developments associated with the war. In order to carry out these dangerous tasks, these men have trained their bodies to survive in extreme conditions and studied numerous fields such as communications and languages. However, their greatest strength lies in their ability to manipulate people in order to obtain the information necessary to give their nation the upper hand. [Written by MAL Rewrite]

In 2007, the Punishment of Sexual Perversions Law came into effect. The city is surrounded by a squadron wearing protective suits and they begin to arrest any who look like perversions. No wonder that Inukami Master Keita and Inukami Yoko are wanted for Class A perversions. What will happen to Keita, Yoko, Kaoru's Inukami, and the other lovely perversions? What about Karina?

Taking place after the events that occurred in Hayate no Gotoku! Can't Take My Eyes off You. Hayate, Nagi and Maria return to their daily lives at the Sanzenin Mansion and the Violet Mansion. (Source: Hayate no Gotoku! Wikia)

Akane Motomiya and her friends Tenma and Shimon are pulled by a demon into another world, where Akane becomes the Priestess of the Dragon God. The people of this world tell her that she is the only one who can stop the demons from taking over; meanwhile, the demons want to use her power for their own ends. Luckily, Akane has the Hachiyou, eight men with powers of their own who are sworn to protect the Dragon Priestess.