Yoshino Hide is an average girl who always seems to find trouble wherever she goes. One day Yoshino visits a local shrine to pray in order to pass her upcoming test. However, Yoshino sees a blue light coming from inside the Shrine and looks inside to find a mysterious person performing a magic spell. In a stroke of bad luck, Yoshino trips on a small bell and crashes into the shrine, prompting the stranger to catch her. Upon Yoshino's capture, the magic spell spirals out of control and sends Yoshino back in time to the Sengoku Era. Yoshino then encounters Akechi Mitsuhide and Oda Nobunaga. But unlike what really happened during the era, Hideyoshino realizes that everyone in the world is female. She then decides to help Oda Nobunaga find the Crimson Armor which is said to allow the person wearing the armor to conquer all of Japan.

Chocolat Meilleure and Vanilla Mieux are both witches and childhood friends, pitted against each other in a contest to see who will become the next queen of the Magic World! In order to win, the two queen candidates must attend school in the human world, cultivating relationships to bring out their classmates hearts of friendship and love... But if a witch gives their heart to a human, they'll die?! In an exciting adventure filled with transformations, mystery, jealousy, and romance, join Chocolat and Vanilla as they work alongside their knights to protect the kingdom from the threat of the Ogres and do their best to become the next queen!

Overworked office employee Seiichirou Kondou would be fine spending the rest of his days in the same exhausting routine, but an unexpected act of heroism causes him to be sucked into a parallel world. His abductors, residents of the magic-filled Romany Kingdom, promise him a life of comfort as an apology for his accidental summoning. Unfazed, Kondou demands something that he thinks would suit him better: a job. After witnessing the incompetence of his new colleagues in the Royal Accounting Department, Kondou's workaholic instincts kick in, and he takes it upon himself to save the kingdom from complete bankruptcy. But this new world proves detrimental to Kondou. When the young and dashing captain of the Third Royal Order, Sir Aresh Indolark, saves Kondou's life, the two become something more than acquaintances. Though Kondou and Aresh initially struggle to convey their clashing values to each other, they slowly realize that this meeting will not only change their own lives but also the kingdom as a whole.

Set in the same timeline as Sin: Nanatsu no Taizai, Nanatsu no Bitoku follows a group of angels sent from Heaven to look for a potential Savior to counter-attack the demonic influence being spread by Lucifer and the other emissaries of Hell. (Source: Tokyo Zerostar)