FROM COMMON PLACE TO WORLD'S STRONGEST (TENSURA X ARIFURETA CROSSOVER)

One day group of students summoned to another world, people of that world called them heroes, who will defeat demons and save the humanity. but things go wrong with certain otaku and he was left alone in labyrinth. He decided to find a way out of labyrinth and return to his own world. At the same time students wer...