High school first year Yuu Yuutani has always been a good girl, following the rules, helping out around her house, and generally going through life unnoticed. From afar, she reveres her upperclassman and the school's Public Decency Officer, Atori Mizutori, and desperately wants her attention. When she realizes that the best way to get Atori to notice her is to be a delinquent, she begins to dress differently: she dyes parts of her hair a bright red, wears clips on her ears to resemble piercings, and attaches jumbo erasers to her shoes to give them thicker soles. Despite Yuu's best efforts and even with the advice of her natural born delinquent friend Suzu Suzukaze, all of her plans to be a bad girl go awry. Still, Yuu manages to befriend Atori and pledges to spend as much time as possible together, not knowing there are others vying for Atori's attention. In the process, Yuu has also gained the attention of the school's self-proclaimed idol, Rura Ruriha, filling her once-invisible life with more attention than she may be able to handle.

As a white mage, Lloyd is constantly looked down on by the hero party's arrogant leader, Allen, who eventually expels him on a whim. Despite being the former student of a legendary mage, Lloyd wanders the city helplessly for days, unable to find a new party in need of a supporting member. However, Lloyd's fate takes an unexpected turn when Yui, the leader of a S-rank group of adventurers, pleads with him to join her party on a mission dear to Yui's heart. Although Lloyd keeps downplaying his abilities, he eventually accepts Yui's aggressive offer. Warmly welcomed by his new allies, Lloyd may have just found the perfect place where his magical prowess will be rightfully valued.

Following the massive operation that led to the confinement of recent recruit Kafka Hibino, otherwise known as Kaijuu No. 8, the Defense Force has been puzzled by how to deal with him. Kafka is the first kaijuu to side with humans, and after careful consideration, he is eventually transferred to the Defense Force's First Division in the hope of adding his power to the strongest division, capable of handling any threat. However, some people are still doubtful about Kafka, and he must prove his worth in the next mission. Kafka and the First Division are soon dispatched when a massive horde of ant-like kaijuu begins wreaking havoc. Thanks to the combined strength of Kafka's friend Kikoru Shinomiya and their captain, Gen Narumi, the mission seems to progress as it should. However, when Kafka fails to transform into his kaijuu form, the dreadful Kaijuu No. 9 joins the battle with only one goal—to eliminate him and steal his power. Although the situation is looking grim, Kafka must overcome his most difficult trial yet with the others if he wants to keep pursuing his dream: fighting side by side with his childhood friend and Third Division captain, Mina Ashiro.

While helping out at an anime convention to promote his city, high school student Kakeru Niimi is caught up in a sudden earthquake. During the emergency, he ends up entering a shrine where he sees a peculiar relic shatter. The very next day, his classmate Miyako Kujou, who was cosplaying at the event, worries that she has been cursed as a result of the earthquake, but Niimi brushes her suspicions off. However, Niimi's mind changes when he discovers that various people have gained supernatural powers in the city—and that some have started using them for nefarious purposes. Fortunately, Niimi is not alone: he is joined by Miyako, his sister Sora, and a cold girl named Noa Yuuki, who have all awakened to their own abilities. If the group wants to keep their hometown safe, they must strive to prevent any future incidents while unraveling the mystery behind it all.