A Certain Idol Accelerator-sama

Toaru Idol no Accelerator-sama
とある偶像〈アイドル〉の一方通行〈アクセラレータ〉さま

Source

A Certain Magical Index
Toaru Majutsu no Index· とある魔術の禁書目録〈インデックス〉
manga

The story is set in a world where supernatural powers exist through science, and magic exists through religion. In the story, Touma Kamijou is an ordinary high school boy with terrible academic scores and a power called Imagine Breaker. Imagine Breaker can defeat any other power, but it also undermines Kamijou's own good luck. His Imagine Breaker's immense strength is literally immeasurable, so hapless Kamijou is listed at the supernatural level of 0. He happens to meet a girl in white hanging off his window balcony. The girl says she is being chased by sorcerers, and Kamijou learns that the girl is a Church of England nun whose memories have been forcibly replaced by Index-Librorum-Prohibitorum — the 103,000 forbidden texts of the Church.

Alternative

A Certain Scientific Accelerator
Toaru Kagaku no Accelerator· とある科学の一方通行
manga

Welcome to a world where mysticism and science collide, and supernatural powers are derived from either science or religion. At the heart of this world is Academy City, an advanced metropolis whose population is comprised mostly of students. The majority of students are enrolled in the city’s “Power Curriculum Program,” where they must learn to master their latent psychic powers. (Source: Seven Seas Entertainment)