In the future in Onomichi, Hiroshima fish disappear from the sea around the world and only whales live in the ocean. The Ministry of Fishery decides to set up giant experimental Universe Fish Tanks in space. The Onomichi Universe Fishery Union is established and begins to train space fishermen. Female fishermen are in demand due to the strengthening of an equal employment law for men and women. Six new female space fishermen are selected, and the story centers on supporting their growth. (Source: ANN)

Alka is an assassin for the Clan of the Sword. She's on a journey to find the woman Jin Valel, who killed her master Hon without feeling—not unlike how Alka has learned to kill in her work as an assassin. On her journey, Alka encounters three strange women, each a great warrior in her own right and grapples with her slain master's wish that she leaves the life of an assassin behind. (Source: ANN)

On his way to Areishia Spirit Academy, Kamito Kazehaya runs into a naked Claire Rouge, a student who had been bathing as part of a purification ceremony. She had been preparing to form a contract with a powerful spirit in order to acquire more power as an "elementalist." Her efforts are wasted, however, when Kamito ends up with the spirit despite the fact that only shrine maidens can become elementalists. Yet to be discouraged, Claire then announces that Kamito must become her contracted spirit instead! After reaching the school grounds, Kamito escapes from Claire and meets Headmaster Greyworth Ciel Mais, who invites him to enroll at the academy. Although his life at Areishia will be far from easy as the only male student among the shrine princesses-in-training, he begrudgingly accepts in exchange for information about his former contracted spirit, Restia Ashdoll. Adding on to that, he also must fulfill Greyworth's main request: to win in the Blade Dance, a battle festival occurring in two months, where he will face the strongest elementalist rumored to be contracted with a darkness spirit. [Written by MAL Rewrite]

Yoshino Takigawa, an ordinary teenager, is secretly dating his best friend Mahiro's younger sister. But when his girlfriend Aika mysteriously dies, Mahiro disappears, vowing to find the one responsible and make them pay for murdering his beloved sister. Yoshino continues his life as usual and has not heard from Mahiro in a month—until he is confronted by a strange girl who holds him at gunpoint, and his best friend arrives in the nick of time to save him. Yoshino learns that Mahiro has enlisted the help of a witch named Hakaze Kusaribe to find Aika's killer and of the existence of an entity known as the "Tree of Exodus." The witch's brother selfishly desires to make use of its power, in spite of the impending peril to the world. However, Hakaze is banished to a deserted island, and it is now up to Yoshino and Mahiro to help her save the world, while inching ever closer to the truth behind Aika's death. [Written by MAL Rewrite]