Nierland—an A.I complex theme park where dreams, hopes, and science intermingle. Created as the first-ever autonomous humanoid A.I, Vivy acts as an A.I cast for the establishment. To fulfill her mission of making everyone happy through songs, she continues to take the stage and perform with all her heart. However, the theme park was still lacking in popularity. One day, an A.I named Matsumoto appears before Vivy and explains that he has travelled from 100 years into the future, with the mission to correct history with Vivy and prevent the war between A.I and humanity that is set to take place 100 years later. What sort of future will the encounter of two A.I with different missions redraw? This is the story of A.I destroying A.I. A.I diva Vivy's 100-year journey begins. (Source: MAL News)

A world where it has been established that people routinely swing between slightly different parallel worlds... Koyomi Hidaka, who lives with his father following his parents' divorce, meets a girl named Shiori Satou at the research institute where his father works. They both have a little crush on each other, but everything changes when their parents remarry. Koyomi and Shiori, convinced that they will never be together, try to jump into another world where they won't be step-siblings... There's no meaning in a world without her.

Staz Charlie Blood is a powerful vampire who rules the Eastern district of Demon World. According to rumors, he is a bloodthirsty and merciless monster, but in reality, Staz is just an otaku obsessed with Japanese culture and completely uninterested in human blood. Leaving the management of his territory to his underlings, Staz spends his days lazing around, indulging in anime, manga, and games. When Fuyumi Yanagi, a Japanese girl, accidentally wanders through a portal leading into the demon world, Staz is overjoyed. But just as he is starting to feel an unusual attraction to her, his territory is attacked, resulting in Fuyumi's untimely death. She turns into a wandering ghost and the crestfallen Staz vows to resurrect her as this would mean being able to travel to the human world, something he has always dreamed of. Blood Lad follows Staz and Fuyumi, soon joined by the spatial magician Bell and the half-werewolf Wolf, as they travel to find a magic that can bring humans back to life. [Written by MAL Rewrite]

Individuals who can materialize weapons from their soul are called "Blazers," and they attend Kouryou Academy High School in order to harness their abilities. Each student is required to partner with another, in the hopes that one day, the pair can attain the power of Absolute Duo. Tooru Kokonoe hopes to attend this academy in order to gain power after his sister and friends were slain by a mysterious man. However, at the opening ceremony, he is forced to duel against the person sitting next to him, with the loser being expelled. As Tooru prepares to give the match his all, it is not a weapon that manifests from his soul, but a shield, an irregularity which catches the attention of a foreign student named Julie Sigtuna. [Written by MAL Rewrite]