Kyou kara Maou! revolves around Yuri Shibuya, your average Japanese teenager. One day, Yuri sees a classmate being harassed by bullies. Thanks to this intervention, his friend is able to escape, but unfortunately Yuri becomes the new target of the bullies in the process and gets his head shoved into a toilet. But instead of water, the toilet contains a swirling portal that sucks him into another world, largely resembling medieval Europe. There, he is told that he will become the next Demon King due to his black hair and black eyes, traits only possessed by the demon's royal lineage. Yuri's arrival is met with some skepticism by some of the demons, who view him as unworthy to be their king. However, after Yuri wins a duel by utilizing his magical powers, the demons slowly begin to acknowledge him as their monarch. Yuri must now learn what it takes be a true Demon King, as he tries to keep the peace between demons and humans in this strange new realm.

When 15-year-old Kino is feeling weighed down by heavy thoughts, one thing always manages to cheer her up: traveling. Nothing fills her heart with joy like exploring the beautiful, wonderful world around her and the fascinating ways people find to live. However, Kino is not as helpless as her cute appearance and courteous demeanor suggest. Armed with "Cannon" and "Woodsman," her trusted handguns, Kino isn’t afraid to kill anyone who would dare to get in her way. Always by her side is her best friend and loyal companion Hermes, a sentient motorcycle, who supports Kino through the sorrows and hardships of their journey. Together, they travel the vast countryside with the shared goal of always moving forward, and a single rule: never stay in one country for more than three days.

As Kino and Hermes encounter new people and learn the rules of their civilizations, they grow and find out more about their own values and virtues. But as Kino slowly discovers the world around her, she also finds herself facing dangers that linger within the vast unknown.

[Written by MAL Rewrite]

After witnessing the death of her family at the hands of bandits, Unchou Kan'u has devoted her life to protecting the innocent by exterminating any group of bandits she comes across. Over time, Kan'u's deeds become famous throughout the land—even if she herself remains unknown. During her travels, she runs across a young girl, Chouhi Yokutoku, whose parents suffered a similar fate as Kan'u's. Finding companionship through their similar pasts, the two girls take a vow of sisterhood and continue to wander the land, determined to bring peace to wherever their journey takes them.

During Kan'u and Chouhi's journey, they meet and travel with several people who are sympathetic to their cause, such as the noble Chouun Shiryuu, the headstrong Bachou Mouki, and the calculating Shokatsuryou Koumei. From problems with local lords to groups of ravaging bandits, Kan'u and her friends do what they can to make life a little easier for those in need, wherever they may be.

[Written by MAL Rewrite]

After dying a laughable and pathetic death on his way back from buying a game, high school student and recluse Kazuma Satou finds himself sitting before a beautiful but obnoxious goddess named Aqua. She provides the NEET with two options: continue on to heaven or reincarnate in every gamer's dream—a real fantasy world! Choosing to start a new life, Kazuma is quickly tasked with defeating a Demon King who is terrorizing villages. But before he goes, he can choose one item of any kind to aid him in his quest, and the future hero selects Aqua. But Kazuma has made a grave mistake—Aqua is completely useless! Unfortunately, their troubles don't end here; it turns out that living in such a world is far different from how it plays out in a game. Instead of going on a thrilling adventure, the duo must first work to pay for their living expenses. Indeed, their misfortunes have only just begun! [Written by MAL Rewrite]