In Japan, betting on horse racing is one of the few legal forms of gambling; thus, the public races have become an interesting part of Japanese culture. In this sport, an individual who rides a horse and competes in races is called a jockey—that is just what Yuu Arimura aspires to be. Becoming inspired after witnessing a derby, 15-year-old idol Yuu shocks the entire nation when he leaves the entertainment industry to enroll in a prestigious horse racing school. Excited to pursue his latest passion, he gradually bonds with his new classmates—such as the talented Shun Kazanami and the self-assured Amane Grace—who are each unique in their own way. Although the path ahead may be full of obstacles, Yuu is determined to pursue his ultimate goal of becoming one with his horse.

A.D. 2115—the island nation once called Japan is now known as the 17th Far East Imperial City Management District. The citizens were promised a life of peace in exchange for some of the comfort they were used to having. People believed their lives would never change and tomorrow will be the same as today. No one suspected the impending doom which their society was about to face. Degradation—a rare disease which led to the total disintegration of the human body to a mere pile of sand was slowly but surely spreading throughout the world. Tohru Kazasumi, an ordinary student becomes embroiled in a multi universal battle between his world and the parallel world of Frontier S (Stratos). This meant that Tohru must fight himself from an alternate world. Their futures collide as their paths cross. Will both worlds ever find peace? (Source: Aniplex USA)

Japan, 2019, just before the dawn of a new era. Suddenly, a rift to another dimension appears in the sky, revealing an alternative world Shinkoku Nippon, with the sky and the earth upside down. This parallel world keeps their former militarism, with its era being Eternal Showa. The military invades the real Japan with giant humanoid robots called Garann and their gas weapons Genmu, rendering our modern weapons ineffective. Shinkoku Nippon instantly seizes the government and achieves de facto conquest of Japan. The new era, Reiwa, has now arrived for Japan. (Source: MAL News)

The story follows Benio Haikara-san Hanamura, who lost her mother when she was very young and has been raised by her father, a high-ranking official in the Japanese army. As a result, she has grown into a tomboy—contrary to traditional Japanese notions of femininity, she studies kendo, drinks sake, dresses in often outlandish-looking Western fashions instead of the traditional kimono, and is not as interested in housework as she is in literature. She also rejects the idea of arranged marriages and believes in a woman's right to a career and to marry for love. (Source: ANN)