Thirty years ago, the Eurasian continent was devastated by a supermassive spatial quake—a phenomenon involving space vibrations of unknown origin—resulting in the deaths of over 150 million people. Since then, these quakes have been plaguing the world intermittently, albeit on a lighter scale. Shidou Itsuka is a seemingly average high school student who lives with his younger sister, Kotori. When an imminent spatial quake threatens the safety of Tengu City, he rushes to save her, only to be caught in the resulting eruption. He discovers a mysterious girl at its source, who is revealed to be a Spirit, an otherworldly entity whose appearance triggers a spatial quake. Soon after, he becomes embroiled in a skirmish between the girl and the Anti-Spirit Team, a ruthless strike force with the goal of annihilating Spirits. However, there is a third party that believes in saving the spirits: Ratatoskr, which surprisingly is commanded by Shidou's little sister! Kotori forcibly recruits Shidou after the clash, presenting to him an alternative method of dealing with the danger posed by the Spirits—make them fall in love with him. Now, the fate of the world rests on his dating prowess, as he seeks out Spirits in order to charm them.

Dreams are doomed to die in Night City, a futuristic Californian metropolis. As a teenager living in the city's slums, David Martinez is trying to fulfill his mother's lifelong wish for him to reach the top of Arasaka, the world's leading security corporation. To this end, he attends the prestigious Arasaka Academy while his mother works tirelessly to keep their family afloat. When an incident with a street gang leaves David's life in tatters, he stumbles upon Sandevistan cyberware—a prosthetic that grants its wearer superhuman speed. Fueled by rage, David implants the device in his back, using it to exact revenge on one of his tormentors. This gets him expelled from the academy, shattering his hopes of ever making his mother proud. After witnessing David's newfound abilities, the beautiful data thief Lucyna Lucy Kushinada offers to team up with him, handing him a ticket to salvation. However, associating with Lucy introduces David to the world of Edgerunners—cyborg criminals who will break any law for money. Edgerunners often lose their lives, if the cyberware does not break their minds first; but in his fight for survival inside a corrupt system, David is ready to risk it all.

For centuries, the Demon Slayer Corps has sacredly kept the location of Swordsmith Village a secret. As the village of the greatest forgers, it provides Demon Slayers with the finest weapons, which allow them to fight night-crawling fiends and ensure the safety of humans. After his sword was chipped and deemed useless, Tanjirou Kamado, along with his precious little sister Nezuko, is escorted to the village to receive a new one. Meanwhile, the death of an Upper Rank Demon disturbs the idle order in the demon world. As Tanjirou becomes acquainted with Mist Hashira Muichirou Tokitou and Love Hashira Mitsuri Kanroji, ferocious powers creep from the shadows and threaten to shatter the Demon Slayers' greatest line of defense.

Tanya Degurechaff is a young soldier infamous for predatorial-like ruthlessness and an uncanny, tactical aptitude, earning her the nickname of the Devil of the Rhine. Underneath her innocuous appearance, however, lies the soul of a man who challenged Being X, the self-proclaimed God, to a battle of wits—which resulted in him being reincarnated as a little girl into a world of magical warfare. Hellbent on defiance, Tanya resolves to ascend the ranks of her country's military as it slowly plunges into world war, with only Being X proving to be the strongest obstacle in recreating the peaceful life she once knew. But her perceptive actions and combat initiative have an unintended side effect: propelling the mighty Empire into becoming one of the most powerful nations in mankind's history.