The Gates of Hell reopen, throwing the world into chaos and setting demons free to terrorize the land once again. These troubles seem irrelevant to quirky villager Touka Scott—until a demon attacks Yuna Eunice, his childhood friend. Luckily, the legendary hero Sion Blandan arrives in the nick of time to strike down the vile creature. Unfortunately, Sion soon dies after accidentally falling into a trap Touka set to defend his radish farm. Anri Haysworth, Sion's necromancer companion, resurrects the hero by transferring Touka's soul into Sion's corpse. Now possessing the body of the legendary hero, Touka is tasked with resealing the Gates of Hell and defeating the demons that threaten peace. Together with Yuna and Anri, Touka copes with both his new reality and Sion's heroic legacy as he embarks to save the world.

The series follows Arashi and his Wild Liger. The main antagonists are the Death Metal Empire, lead by Gallagher. They use Zoids for conquest, and have at their command many Zoids and warriors, including the Four Heavenly Kings. Arashi longs to follow his father's footsteps become a Zoid Hunter, and find his ultimate Partner. At the beginning of his journey, he partners up with the Wild Liger and meets Bacon and Team Supreme, who tell him about the Great Ancient Treasure Z. (Source: Zoids Wiki)

Miu Takigawa views the world from behind the safety of her bangs, content with peacefully passing unnoticed through life. Reserved and timid, Miu struggles to converse with or even smile at customers when at her part time job, but she works tirelessly to support her mother and precious little sister, Haru. It is a shock when a letter arrives from the entertainment company GIP, announcing that she has been chosen as a candidate for their new project. Miu decides to accept the invitation and heads to the meeting spot where the eccentric ensemble of other candidates filter in, all summoned by their own letters. Not long after, the girls are escorted by a manager to a luxurious secret facility, where it is explained that they must follow the mysterious directions of The Wall, whose orders are absolute. The 24th of December, 2016, will see the birth of idols like no other; on that day, the group 22/7 will debut, whether or not Miu and the other members are ready to take the stage.

The story begins with Hanabi, a sixth-grade girl who is neither an adult nor a child. She deals with issues such as accidentally witnessing her homeroom teacher kissing, and worrying about experiencing physiological changes before her friends. The series depicts a 12-year-old girl's innocent worries and first love. (Source: ANN)