After an accident that killed his father and left his sister with a disability, Shun Tokinoya's mental duress has led to him refraining from online gaming. Now a model high school student who feels remorse over his past lifestyle, Shun works part-time in the cybercafe owned by his childhood friend Nozomi Inatsuki in order to support his family. Despite this, an incident pushes Shun back into the world of online gaming. Following the sudden retirement of all players of FOX ONE—Nozomi's father’s esports team—Shun learns that the Inatsuki family is in severe debt. In order to repay the money they owe, Shun reluctantly agrees to participate in an online game tournament: Xaxerion Championship. Joined by their classmate Akito Sendou, the three of them scout for talented players to rebuild the team. Although they are lucky to find two promising additions to FOX ONE, it is too soon to celebrate: if Shun does not let go of his guilty conscience, the makeshift team stands no chance at winning the tournament.

After receiving a text message offering to fulfill any of his wishes, high school student Gorou Ono successfully enacts his perverted fantasies with classmate Sawa Honoka. However, to his dismay, the granter of his wish materializes in the form of a demon named Lall. She informs him that he is now part of a game that will determine the next God of the world. As Gorou struggles to come to terms with this reality, Sawa attacks him with a giant sword, revealing that she also is part of this twisted competition for the divine throne. Every participant of the game receives a special power, and Gorou manages to kill his classmate with his ability: the Holy Book of the Fool. But this technique comes at a cost: Gorou's life gets worse every time he uses the book. As he learns more about this seemingly absurd competition, Gorou must find allies and learn how to use his newfound power before he loses everything.

After the mysterious disappearance of one of its participants, the battle meant to name a successor to God is brutally interrupted, leaving behind a trail of destruction and shaking the world. Twelve years later, while the former contestants in the divine competition struggle to fit in society after they were turned into semi-permanents—beings unable to age—Lall refuses to let go of her brother, who has been forgotten by everyone. Determined to resurrect her brother—the only one she sees fit to sit on the heavenly throne—Lall steals her his cellphone from a cult run by a past competitor, which accidentally restarts the competition. Helped by her classmate Eko Sasaki, Lall will show no mercy to prevail against her enemies in her efforts to finally see her brother again.

Due to her mother's work, Chizuko Date has never remained in one place for long or grown attached to anything in particular. However, while temporarily staying with her grandfather Suikyou, she witnesses something extraordinary: a magical girl named Berry Blossom fighting against Chroma, member of the evil organization Fossa Magna. Seeing Berry Blossom save the day ignites a passion in Chizuko, and she swears to be a fan of the new magical girl in town thereafter. As time passes, Berry Blossom's popularity dwindles due to the incompetence of her opponent. When Chizuko randomly encounters Chroma himself, she does not hold back her complaints against him. For his part, Chroma does not enjoy being defeated again and again; moreover, Fossa Magna will force him to resign if he continues losing. In desperation, Chroma begs Chizuko to become his second-in-command and help him with his evildoings. For the sake of Berry Blossom regaining the spotlight, Chizuko must question whether it is right to join forces with the magical girl's sworn enemy.