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]

Tooru and Run have been best friends forever, so when Tooru learns that she's managed to get into the same high school as Run, she runs to tell her... only to find Run in a compromising position with yet another girl, Yuko. Needless to say, that makes things a bit awkward at school, with Tooru fending off those who might be interested in Run while Yuko and their other girlfriend, Nagi, have to deal with Run's own penchant for drama. (Source: Sentai Filmworks)

Extra specials from the DVD/BDs.

Although learning different languages continues to be an interest for Shinobu and her friends, the new school year brings unexpected difficulties. Not only is there always something new and different to distract them from their studies, but Alice and Yoko also are having trouble adjusting to being in a different class from Shinobu and Aya. Meanwhile, Karen isn't getting along at all with her new homeroom teacher, and it doesn't help that the teacher is having trouble figuring out how to make herself seem friendlier to her students as well. Craziness may ensue, but sometimes, all it takes is the right mutual experience to bring everyone together. While some of those experiences may not be as well-thought-out as others (like when Alice and Aya act like juvenile delinquents to seem more grown up), the gang's new adventures are certain to warm everyone's heart as the fun and friendships keep growing in HELLO!! KINMOZA! (Source: Sentai Filmworks)