As a young boy, Prince Oscar Lyeth Increatos Loz Farsas was cursed by the Witch of Silence, rendering it all but impossible for any woman to bear him a child. After 15 years of fruitlessly seeking a way to lift the spell, Oscar resorts to enlisting the help of a different witch. To this end, he heads to the Azure Tower, home of the Witch of the Azure Moon. Ascending the tower is no easy task; for decades, no one has overcome the array of traps, puzzles, and enemies designed to repulse any challengers. Oscar, however, easily climbs to the top, where he meets the fabled witch, Tinasha. To the prince's surprise, despite being hundreds of years old, Tinasha looks like a beautiful young woman in her late teens. Oscar explains his circumstances to the witch, who quickly perceives the true nature of his affliction. Though she claims that undoing the spell would be tremendously difficult, Tinasha proposes a workaround—to find Oscar a partner capable of withstanding the curse's effects. Realizing that such a woman is right in front of his eyes, Oscar boldly tells the witch to marry him. Though he is promptly rejected, the young prince refuses to back down, and the two eventually reach an agreement: Tinasha will leave the tower and live with Oscar for the next year. As the two continue searching for a way to lift Oscar's curse, word of Tinasha's emergence from isolation spreads, catching the attention of all sorts of old acquaintances.

Sumireko Ogawa is a busty bookstore clerk who wants to become a novelist after some writing success in her youth. When strange occurrences start cropping up around the city, she teams up with her flirtatious co-worker Ren Adashino to look into them. But Ren is hiding a secret of his own! With their combined skills of occult knowledge, what will they discover as they investigate?

Shidou Itsuka faces greater peril than ever due to his continued involvement with Ratatoskr. He has already sealed 10 Spirits, and Isaac Westcott, leader of Deus Ex Machina Industries, has finally decided to kill Shidou and plunder the Spirits' powers for himself. To achieve his goal, Isaac declares an all-out war against Ratatoskr, forcing the organization to exhaust its resources to ensure Shidou's survival. Despite being severely outnumbered and outmatched, a glimmer of hope exists in the form of the Spirit of Time, Kurumi Tokisaki. Shidou must seal and acquire Kurumi's power to travel to the past and confront the Spirit of Origin—the catalyst that started it all.

Following the faceless god Hitogami's advice seems to have worked wonders for Rudeus Greyrat. After enrolling into the University of Magic as he was told, Rudeus reunites with his childhood friend Sylphiette, who put a valiant effort into curing his condition. The two grow ever closer together and decide to host a wedding party, inviting the friends they have made over the years to announce and formalize their relationship. For all his recent blessings, however, Rudeus' troubles are far from over. The research he is helping Shizuka Nanahoshi conduct hits a bottleneck, sending her into a deep slump much like he experienced in his previous life. Furthermore, a letter from his father, Paul, brings complications to Rudeus' relationships, and Sylphiette still knows next to nothing about his real background. In the face of these issues, Rudeus will have to apply the lessons he has learned in this new world to navigate through the challenges that come with living a life to its fullest.