Is This Really Science?

After transmigrating from the start into a broken region, I thought it was the apocalypse. Turns out, it was the Kengan world. Then I thought it was the Kengan world, but it turned out to be Tokyo's Beika District.

Wait, this world even has angels and demons, and the human realm has given rise to an opposing world hostile to humanity. Seriously, is this a science-based mystery?

Fortunately, when faced with such a bizarre world, Liu Ping'an awakened a System that lets him overwhelm everything with firepower.

This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.