最強究極の七大罪使いは容赦ゼロで禁忌を犯しつくす (Associated Names)

In the year 20XX — seven seraphim suddenly descended upon the city of Kichijouji. Then, within a several kilometre radius of Inogashira Park, a certain phenomenon occurred. People began to obtain special abilities one after the other. The seraphim then caused an immensely tall structure to appear within the park, and they disappeared into it.…