In a world of adventurers and magic lies Naral Island. Every generation, a Demon Lord rises to plague the land, and every generation, a Hero is born to subdue him. For countless centuries, the cycle has repeated with no end in sight. The latest Hero, Juulia "Yusha" Charldetto, has almost completed her valiant campaign alongside her party members: responsible priest Seiran "Seira" Élénoir, enigmatic mage Meiza "Mei" Endust, and hyper-energetic warrior Fai Fai. In the final battle against the Demon Lord, Yusha's party attempt a risky spell to cast their enemy into the drifts of time. But the incantation goes awry, sending Yusha and her friends back to a time before the Demon Lord, before Yusha becomes the Hero, and before the party had even graduated as adventurers. With their memories of the future erased, the four girls restart their ambitions to become the Hero's Party, aspiring to defeat the Demon Lord. However, in a sudden twist of fate, the Demon Lord was also sent back in time with her memories intact. Reduced to the form of a little girl, the Demon Lord takes the name Mao and infiltrates the adventurers' school as a teacher, planning to stop Yusha before she becomes a hero. Thus begins the story of Yusha and her friends, in their quest to defeat the Demon Lord, not knowing that the one they seek is right by their side. [Written by MAL Rewrite]

Nobita has been having a weird dream about a boy named Roppel and his strange companion Chami traveling in space. By a twist of fate, he met them in person where it turns out that they are real and that they were being pursued in space, causing their space vehicle to malfunction, connecting the space vehicle itself with Nobita's room. They journeyed to Roppel's planet and amidst their enjoyment, Nobita and Doraemon pledged to help Roppel's planet free from their oppressors. 

(Source: ANN)

Kohane Hatoya’s most lovable trait is also her greatest flaw. She loves to help others no matter how far she has to go in order to get the job done. Her biggest inspiration to do so comes to light when she sees what cheerleading looks like for the first time in middle school. Now a highschooler but as enthusiastic as ever, Kohane wants nothing more than to start her very own cheerleading squad. She's encouraged by her best friend, Uki Sawatari, who often has to help her get out of trouble. There is just one problem: Kohane does not have any experience in cheerleading. She has absolutely no idea what to do, what to wear, or how to perform. To make matters worse, she has been scared of heights since childhood, and this new sport is full of stunts pulled far from the ground for a girl her size. Enter Hizume Arima, a former cheerleader who wishes to leave her pastime behind. Unfortunately for her, Kohane recognizes Hizume, and will stop at nothing just so she can lead the new squad, even if it means facing her childhood fear. [Written by MAL Rewrite]

In the aftermath of a war fought by magnetic weapons which caused massive earthquakes, a young and spunky boy named Conan gets involved in a grand adventure. Conan lives in a world that is mostly oceans; the major land masses having been destroyed by the weapons of the great war. He meets a young girl named Lana, and they eventually foil the plans of the city-state of Industria which wants to regain the lethal weapons.