World's Strongest Rearguard – Labyrinth Country and Dungeon Seekers Manga

Summary:

Workaholic assistant Atobe Arihito fell asleep on his company's bus while on a vacation. When he awoke he learned he had died due to the bus getting into an accident, and that he had reincarnated into a world of reincarnators—to the Labyrinth Country. To his surprise, he was discovered by his slave-driving manager, Igarashi Kyouka, who further explains their role in this world.

Workaholic assistant Atobe Arihito fell asleep on his company's bus while on a vacation. When he awoke he learned he had died due to the bus getting into an accident, and that he had reincarnated into a world of reincarnators—to the Labyrinth Country. To his surprise, he was discovered by his slave-driving manager, Igarashi Kyouka, who further explains their role in this world.

Workaholic assistant Atobe Arihito fell asleep on his company's bus while on a vacation. When he awoke he learned he had died due to the bus getting into an accident, and that he had reincarnated into a world of reincarnators—to the Labyrinth Country. To his surprise, he was discovered by his slave-driving manager, Igarashi Kyouka, who further explains their role in this world.