After wandering this world for less than half a day, he encountered what the natives of this world called a "devil" in a dark alley.
Fortunately.
Although, at the last moment, he had thrown [Incursio] to Su Wei so he could protect his younger sister, and had lent the [Black Pot Armor] he bought to his close friend Fujimaki for self-defense.
He was still wearing the Reinforcement Suit produced by the Black Sphere, as well as the Sandevistan embedded in his spine.
With the Reinforcement Suit's tenfold physical enhancement and the bullet time activated by the Sandevistan.
Horikita Manabu had forcibly relied on a fire axe he picked up to hack to death the devil Aki Hayakawa called the Gay Devil.
Very soon, several people dressed in black suits who called themselves the "Public Safety Devil Extermination Special Division" arrived at the scene.
Because he had displayed combat power beyond that of an ordinary human, Horikita Manabu was naturally taken away and recruited by the Devil Extermination Division.
Over the following days.
Horikita Manabu followed his nominal senior—a stern man named Aki Hayakawa—and learned the truth of this world.
The Gun Devil, the Fox Devil, an endless stream of horrific incidents, and humanity's fragility before devils, as insignificant as blades of grass...
After reading through the Devil Extermination Division's appalling casualty files, Horikita Manabu stood before the window and looked out at Tokyo's seemingly prosperous nightscape. For the first time, he actually felt a trace of relief.
'Compared to this despairing world, rotten to its roots...'
'Perhaps our world encountering a mysterious existence like the Black Sphere really was a kind of fortune.'
Although the Black Sphere was undoubtedly terrible news for the students of Advanced Nurturing High School.
When these otherworldly monsters capable of destroying everyday life invaded the