A team of three magical girls known as Tres Magia protects the town where Utena Hiiragi lives. Like many others, Utena loves these magical girls who valiantly fight in the name of justice. One day, a mysterious black mascot character appears before Utena and grants her the opportunity of a lifetime: a chance to transform into a magical girl. However, the offer is not what it seems, as Utena has been recruited for an evil organization to fight the magical girls she has always admired. Utena is then forced to confront Tres Magia in battle; but instead of feeling remorse, she unexpectedly finds pleasure in inflicting pain on the magical girls. Completely giving in to her desires, Utena embraces her role as a villain, slowly transforming her adoration for magical girls into a new sadistic obsession.

In her first life, the renowned and genius surgeon Dr. Aoi Takamoto was Elise de Clorance, a villainess of noble descent. Elise's selfishness, insolence, and obsessive love for her fiancé—Prince Linden de Romanoff—led to the deaths of her family members and, eventually, herself. Only after being reborn did Elise realize the error of her ways and decide that, instead of ruining lives, she would devote herself to saving them. But a tragic airplane crash robs her of her dreams too soon. By a miracle, Elise wakes up in her original body before her official engagement to Linden. Recognizing the chance to cherish her loving family and free Linden from an unwanted marriage, Elise wishes to use her advanced medical knowledge to continue down the path of saving lives. In a deal with the emperor, Elise is given only six months to prove that her true place is not on the throne, but rather with the wounded and ailing who desperately need her help.

Expert gamer Tomozaki Fumiya doesn’t exactly fit in, but he wishes he did. With no written rules for success and gameplay that doesn’t work in his favor, the real world seems impossible for someone like him. But, like any noob, all he really needs are some strategies and a seasoned player like Aoi Hinami to help him. Hopefully with her guidance, Tomozaki will gain the experience he needs.

In a world where the Demon King has died, a host of demigods capable of felling him have inherited the world. A master fencer who can figure out how to take out their opponents with a single glance; a lancer so swift they can break the sound barrier; a wyvern rogue who fights with three legendary weapons at once; an all-powerful wizard who can speak thoughts into being; an angelic assassin who deals instant death. Eager to attain the title of "True Hero," these champions each pursue challenges against formidable foes and spark conflicts among themselves. The battle to determine the mightiest of the mighty begins.