(BL) Adventure in another world with my sorcery encyclopedia

Yu Su, who perished during the apocalyptic era, found himself transported back to a primordial era. Upon arrival, he discovered that he was destitute. His birth mother had passed away, his father suffered from mental disabilities, and his younger brother exhibited signs of autism. The responsibility of survival now rested solely on Yu Su's shoulders. Nevertheless, he considered this life far superior to the apocalyptic era. Armed with determination, resourcefulness, and a mind teeming with extensive knowledge of the Sorcery Encyclopedia, he believed that no obstacle would be insurmountable. In this primordial era, treasures were abundant, waiting to be unearthed! In order to conceal his hidden supernatural abilities, Yu Su resorted to deception and claimed divine revelations. Gradually, he assumed the role of a deceitful deity, a remarkable imposter who captured the gods' attention. Unbeknownst to him, he had unwittingly become the gods' spokesperson in the mortal realm.