As Yumeko Jabami's fame grows and the reputation of the student council dwindles, Kirari Momobami decides to revolutionize the group. To this end, she announces an election for its next president. The rules are simple: each student in the school receives one chip. Whoever has the most chips by the end of thirty days becomes both the new president and the head of the Momobami clan. Upon receiving news of this development, the Momobami branch families spring into action. Eleven transfer students arrive at Hyakkao Private Academy, each aiming to lead both the school and the Momobami clan. Equipped with unique talents, they will compete to get as many chips as possible—but their chips are not the only things on the line. [Written by MAL Rewrite]

Now in possession of the Edens Zero, Shiki Granbell has gathered the Four Shining Stars. With the help of his new friends, Shiki will be able to breach Dragonfall—the border of the Sakura Cosmos swarming with mechanical dragons. Once that is achieved, he can continue his quest to find the goddess Mother. Before the Edens Zero crew can advance their journey, they notice a mysterious warship following them. Upon learning that the ship—the Belial Gore—belongs to Drakken Joe, Shiki and his crew attempt to infiltrate it, intent on figuring out why the Dark Alchemist is after them. In the process, the Edens Zero is taken hostage by Drakken's subordinates. Though they are in a tight situation, Shiki refuses to back down. Working together with his friends, Shiki will have to take down the Dark Alchemist if he hopes to make it out of the Belial Gore alive.

Five years ago, Musashi made a promise with his friend Kojirou Kanemaki that once they grew up, they would become samurai, form a league, and go on demon-slaying quests. But since then, things have changed. With demons now being praised and worshipped by society, the samurai are shunned and disgraced. Afraid of revealing his dream of becoming a samurai, Musashi blends into the town's dogma by becoming a miner while secretly polishing his swordsmanship. Meanwhile, despite being a direct descendant of a samurai, Kojirou gives up on his promise to his old friend. However, after saving Musashi from a near-death experience, his perspective shifts. Although still conflicted, Kojirou embarks on a journey with Musashi in the hopes of figuring out his true feelings. Fighting against all odds, the duo dives headfirst into the unknown world of beast-slaying, not knowing what life has in store for them. Now astride iron horses, the fifteen-year-old heroes plan to restore the tarnished reputation of the samurai and purge the world of demons.

As the Fourth Holy Grail War rages on with no clear victor in sight, the remaining Servants and their Masters are called upon by Church supervisor Risei Kotomine, in order to band together and confront an impending threat that could unravel the Grail War and bring about the destruction of Fuyuki City. The uneasy truce soon collapses as Masters demonstrate that they will do anything in their power, no matter how despicable, to win. Seeds of doubt are sown between Kiritsugu Emiya and Saber, his Servant, as their conflicting ideologies on heroism and chivalry clash. Meanwhile, an ominous bond forms between Kirei Kotomine, who still seeks to find his purpose in life, and one of the remaining Servants. As the countdown to the end of the war reaches zero, the cost of winning begins to blur the line between victory and defeat. [Written by MAL Rewrite]