Only I Know That the World Will End is a Manga/Manhwa/Manhua in (English/Raw) language, ACTION series, english chapters have been translated and you can read them here. You are reading Only I Know That the World Will End chapters on ManhwaZ, fastest updating comic site. The Summary is
An ordinary office worker, Akira Ichijo, was attacked by a Minotaur on his way home from work. In the next moment, he woke up in his office desk, Akira was resurrected from death, inherited his level and status, and possessed a unique skill called "Return from the Underworld" that allowed him to restart his life at a certain time. Now Akira makes full use of his skill and everything he had to search and survive with his childhood friend Nao Nanase to face this cruel world!!