Saitei Rank no Boukensha, Yuusha Shoujo wo Sodateru ~Ore tte Kazu Awase no Ossan Janakatta ka? (Associated Names)

In an experiment to create artificial black holes or white holes for energy generation, things went awry. Instead, it opened a portal to another world, but not a friendly one. It connected to the dwelling places of creatures known as monsters. Amidst this chaos, individuals with supernatural abilities, similar to the monsters, emerged. They were…