Only I Know That the World Will End. In a World Where Monsters Appear, I Level up by Returning From Death

A normal office worker, Ichijyou Akira, encountered a minotaur and died on his way back from work. — A moment later, he woke up right back at the office! Akira returns to life after death, inheriting his level and status, and the skill “Return from Tartarus”, which allows him to restart his life from a certain point!! In the current world heading to its doom due to monsters invading, Akira masters his skill and tries his best to look for a route of survival with his childhood friend, Nanase Nao—!!