There exist few humans in this world with the ability to manipulate their souls to form powerful weapons. Dubbed "Blazers," these people study and train at the prestigious Hagun Academy to become Mage-Knights; among the students is so-called failure Ikki Kurogane, the sole F-rated Blazer. However, when the worst student in the academy sees Stella Vermillion, an A-ranked Blazer who also happens to be a princess, naked, she challenges him to a duel with dire stakes—the loser becomes the slave of the winner. There’s no possible way that Stella can lose, right? Rakudai Kishi no Cavalry follows the story of Ikki as he tries to prove his strength to a world that believes him to be the weakest, all the while gaining new friends, wisdom, and experience. [Written by MAL Rewrite]

In the game, the player takes the role of an unnamed former little senior league baseball ace who lost his or her baseball career after suffering an unspecified injury. The character moves to his or her grandmother's hometown and enrolls in the local high school, resolved never to enter the world of baseball again. When the character meets Tsubasa Arihara, he or she is persuaded to be the manager of the school's baseball team, and to take the team to the high school nationals at Koshien. (Source: ANN)

Ceres was a tennyo (Celestial maiden) who came down from the heavens to bathe in a stream. She hung her hagoromo (robe) on a tree nearby, which was her key to returning to the heavens. But the robe was stolen and the man who had stolen it forced her to become his wife, thus producing a family full of human and tennyo blood mixed. Now, in modern day time, Aya Mikage is a descendent of Ceres, and has quite an amount of tennyo blood. On her 16th birthday, she and her twin brother, Aki, are thrown a party. At the "party," Aya's grandpa plans to kill her, for she has tennyo powers unlike the rest of the family, and can actually become Ceres herself and destroy the Mikage family. Aya, however, can switch back, so this transformation happens quite frequently. With protector Yuuhi by her side, it is up to Aya to control Ceres and keep her from coming back, but her relationship with an ex-worker for her evil grandpa may be a distraction.

A new original animated story included on a bonus mail-order DVD eligible for readers of LaLa's August, October and September 2013 issues. It was later aired as a special in the broadcast schedule of Natsume Yuujinchou Go on the 16.November 2016.