Secret Class, an Isekai Adventure

Liu Xiaobo is a frustrated web developer. Fortunately, his soul is saved before complete death and transported to a new world. A world that is in grave peril. Demons are invading, and they grow plentier and stronger by the second. The gods of the Illie Archipelago urgently need help, Otherworlder! However, it needn't be yours. Come, hero! Theres a quota to fill, and a [Secret Class] to be earned!