Black Abyss at Dawn
Summary
A door to a world of monsters emerged out of thin air, those who possess superpowers now bear the responsibility of fighting them. Bai Yu, known as the “strongest”, died during his mission. After his rebirth, a mysterious system appears in front of him. Follow his journey back to the top and to save humanity!












In a system like that there would need to be rigorous documentation and certificates of prior ownership/guardianship or else anyone and everyone would just get grabbed off the street and enslaved at any time, and such a society would collapse instantly. So these slavers wouldn't have such documentation unless it was a forgery since the kids were just kidnapped; both offenses should be very serious capitol crimes. Once again, the day is saved by glorious Bureaucracy! (and the MC's knowledge and exploitation there of).