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Traveling to the magical world of Versatile Mage, as a branch of the time point of the original work of Versatile Mage... A multi-parallel world where there is no system and both science and reality exist... And there are parallel worlds intertwined with other all-French fans and different... All French fans... A Certain Magical Index... Demon Slayer: Kimetsu no Yaiba... And... ... ... ...

A otaku who is no longer young, An office worker who was brainwashed by a full-time mage, When I woke up... I realized that I had traveled to a magical world, A world where society is governed by law... This is exactly the world among full-time mages, A world dominated by demons... Various magical civilizations exist among humans This is where the adventure story of a time traveler begins...