According to Murphy's Law, anything that can go wrong, will go wrong, and truer words cannot describe the unfortunate life of the hard-working Hayate Ayasaki. Abandoned by his parents after accumulating a debt of over one hundred fifty million yen, he is sold off to the yakuza, initiating his swift getaway from a future he does not want. On that fateful night, he runs into Nagi Sanzenin, a young girl whom he decides to try and kidnap to pay for his family's massive debt. Unfortunately, due to his kind-hearted nature and a string of misunderstandings, Nagi believes Hayate to be confessing his love to her. After saving her from real kidnappers, Hayate is hired as Nagi's personal butler, upon which she is revealed to be a member of one of the wealthiest families in Japan. Highly skilled but cursed with the world's worst luck, Hayate gets straight to work serving his employer all the while trying to deal with the many misfortunes that befall him. From taking care of a mansion to fending off dangerous foes, and even unintentionally wooing the hearts of the women around him, Hayate is in over his head in the butler comedy Hayate no Gotoku!

Professional wrestler Genzou Shibata sports the body of a mountain, but beneath his hulking appearance is a man with an extreme affection for animals. Facing off his opponents in the ring as the legendary Animal Mask, Genzou wins the hearts of crowds everywhere with his iconic tiger persona. During the bout for the title of World Champion against his greatest rival, the Macadamian Ogre, Genzou is suddenly summoned to a fantasy world by a princess. With her kingdom being threatened by a monster infestation, she pleads the wrestler for assistance—to which he answers by knocking her out with a German suplex! Escaping the castle and finding himself stranded in a mysterious land, Genzou decides to begin his career as a beast hunter to capture and befriend creatures far and wide. Joined by the wolf-girl Shigure, the dragon-girl Hanako, and the vampire Carmilla Vanstein, the professional wrestler pursues all kinds of dangerous requests for the sake of fulfilling his dream as a pet shop owner.

Following the temporary retreat of the Altana Liberation Army from the Kabuki District, the state of the war has seemingly improved. However, as the Oniwaban, Shinsengumi, and residents of the district combat the army's remnants, Edo's greatest inventor Gengai Hiraga is abducted. Responsible for causing the enemy's withdrawal by rendering their weapons useless, Gengai's nanomachine virus is now at risk of being shut down. Meanwhile, a laser capable of obliterating a planet is activated in Earth's orbit on the Liberation Army's mother ship. Another battle ensues when Shinsuke Takasugi and the rest of the Kiheitai arrive on the vessel to stop the weapon from firing. Forced to fight a war on two fronts, the Yorozuya and their allies must prevail on both sides to save Edo and the rest of the world.

The Carnival Moment is a time when several narratives from Type-Moon's famous works intersect. It happens every decade in an entirely new dimension, and those who have never run into each other can meet. And what's more, all individuals involved gain the opportunity to fulfill any of their wishes! However, they will have to come a long way, as they will need to partake in contests. In Carnival Phantasm, various characters are put into situations that ridicule their own worlds. Nevertheless, they all have the same objective: to win the contests by any means necessary!