Humanity has successfully colonized all the planets in the Solar System, with intentions to continue into new frontiers. Individuals live stable lives in these colonies, including young high school students living in 4th Tokyo on Mars. Two of these students are Iris Shirazaki and Mizuki Sera. Iris is finishing her last year of high school while studying to be a test pilot while her friend Mizuki also works as a mechanic on the aircraft. Her own brother, Kaito, oversees Mizuki and Iris as their homeroom teacher and program director.

Few people know the truth: the world is safe thanks to the Magical Girls who are forced to slay Witches. Even though these girls are putting their lives on the line for a wish, rumors say they can be saved in Kamihama City. That’s where Iroha Tamaki is headed in search of answers; she can’t remember the wish she made to Kyubey.

西化的浪潮冲击之下的架空都市「横滨」中，以旧时文豪为名的人们使用着神秘的「异能力」进行着生死决斗的动作大作「文豪野犬」。哭泣、呐喊、以灵魂互相碰撞，奔走在生与死的界限的「武装侦探社」与「港口黑手党」的角色们居然——变成了可爱的Q版人物，装傻、吐槽，根本停不下来！？搞笑衍生动画，在此开幕！

Living by the sea, protecting the sea, and journeying across the sea…They’re the BLUE MERMAIDS! Because of a shift in tectonic plates around 100 years ago, Japan lost much of its area to submergence. To preserve Japan’s territories, Coastal Cities sprung up, one after the other. Eventually, they became Marine Cities, and along with the expansion of sea-lanes to connect them, the need arose for a sizable staff to protect the seas. At the same time, maritime jobs were becoming more popular among women. Hence, the BLUE MERMAIDS had become every female student’s dream job.

Living by the sea, protecting the sea, and journeying across the sea... They're the Blue Mermaids! Because of a shift in tectonic plates around 100 years ago, Japan lost much of its area to submergence. To preserve Japan's territories, coastal cities sprung up, one after the other. Eventually, they became marine cities, and along with the expansion of sea-lanes to connect them, the need arose for a sizable staff to protect the seas. At the same time, maritime jobs were becoming more popular among women. Hence, the Blue Mermaids, tasked with keeping the seas safe, had become every female student's dream job. This is when childhood friends Akeno Misaki and Moeka China enroll in a marine high school in Yokosuka, along with other girls who share their goal of becoming a Blue Mermaid.

What would you do to pursue your passion? For Hiyori Suzumi, it’s leaving her simple rural hometown for the bustling city of Tokyo to join Sakuragaoka High School’s track team. Between being a manager-in-training for two cutthroat schoolboy idols, track, and friends, Hiyori shows no signs of slowing down.

Takamiya Honoka is a regular student whose only problem seems to be that he sits next to Kagari Ayaka, the school's #1 beauty. They have never spoken to each other before and any small interaction between them immediately results in her fanclub beating him. Yet when a falling part of the school's building is about to send him to the afterlife, it's Kagari that comes to his rescue. Only... she's dressed as a witch, carrying him in her arms and floating on a broom?! Kagari tells him it is her mission to protect him and that now she can finally protect him openly rather than undercover.

Hasta ahora, la existencia de la raza de los monstruos ha sido ocultada por las personas, pero recientemente, para lograr una coexistencia amistosa y una comunicación mutua entre las personas y los monstruos, la raza de los monstruos se ha integrado a la sociedad humana a través de varios esfuerzos. Es en este contexto que el héroe de la historia vino para quedarse y el protagonista recibió una tras otra a las chicas monstruosas que se alojaban en su casa, tenían diferentes personalidades y todas eran chicas "raras" y hermosas. Bajo el gran tema del intercambio cultural, Gong y ellos desarrollaron juntos una vida de convivencia inusual y emocionante.

Constantly outperformed by the girls' club, the boys' soft tennis club faces disbandment due to their poor skills and lack of positive results. In desperate need of capable players, Toma Shinjou is looking to recruit, but he fails to do so. Enter Maki Katsuragi, a transfer student who demonstrates great reflexes when he catches a stray cat, Instantly capturing Toma's attention. Toma ambitiously asks Maki to join the team but is quickly rejected, as Maki doesn't wish to join any clubs. Toma refuses to back down and ends up persuading Maki - only under the condition that Toma will pay him for his club expenses. As Maki joins the team, he immediately outshine the rest of the team. This gives rise to conflict among the team, Maki challenges his fellow team members to devote themselves to the game they once neglected. This story focuses on the boys' soft tennis club and their discovery of their own capability, while also enduring the darker side of growing up in middle school.

The story takes place in an age where "Ajin" (demi-human), more casually known as "Demi," have slowly started to become accepted into human society. Tetsuo Takahashi is a biology teacher who ends up teaching three such Demi, hoping to understand more about them while also managing to catch their attention.

Something sinister is going on in Academy City. The shadows are filled with whispers of an organization cloning super-powered students known as espers. High-ranking master of electricity, Mikoto Misaka, laughs off these stories until she comes face to face with a copy of herself. After learning that these clones — her sisters — are being systematically murdered in a series of experiments designed to turn a sadistic killer into the strongest esper in history, Misaka vows to save her copies and destroy the organization responsible for the project. As Misaka prepares to face off against the organization’s power-hungry esper, she discovers that she wasn’t the only victim of the scientific forces conspiring within the city — and that’s something Misaka and the girls of Judgement simply won’t stand for.

Naral Island, a continent with swords and magic in which humans and monsters coexist. The terrible Demon King lives there. In ancient times, the first-generation hero defeated the Demon King. Over the many successive generations since then, the Demon King has been resurrected, and the hero who opposes him has likewise reappeared. Girls attend a school for adventurers in order to defeat the Demon King when he appears again. Though a bit absent-minded, Yusha has the body of a hero. The holy elf Seyla's trouble never ends because she is too serious. The cheerful warrior Fai loves to eat. Mei is a quiet otaku magician. As the four girls aim to be in the hero party, they live relaxed fantasy lives and show no sign of defeating the Demon King no matter how much time passes.

Humans have created many stories. Joy, sadness, anger, deep emotion. Stories shake our emotions, and fascinate us. However, these are only the thoughts of bystanders. But what if the characters in the story have "intentions"? To them, are we god-like existences for bringing their story into the world? Our world is changed. Mete out punishment upon the realm of the gods. In Re:CREATORS, everyone becomes a Creator.

In 1972, the Apollo 17 mission discovered a hypergate to Mars on the surface of the moon. Soon a war breaks out between Earth and Mars, and Martian soldiers begin to descend from the sky, riding steel giants, intent on exterminating humanity.