Horror World: I Gained a New Life in Despair

Everything he saw in his dream became reality, and he groped forward alone in the darkness. There is no one behind you, or you may be reborn. That is a deeper world, reflecting a deeper darkness. Everything reflected in reality bursts out from the other world, and you may replace the other person and become the new despair. Transcending the illusion and intervening in reality, this is the deepest memory and the most reluctant memory to mention. That is a memory that belongs only to you... You have no other choice but to embrace it The protagonist enters a dream, and experiences bizarre cases one after another in the dream that are reflected in reality. In the dream, he is guided by a voice claiming to be "the system". It is a world full of despair and various negative emotions. The protagonist will enter it as soon as he sleeps, and will leave at a specific time. The "system" will give tasks and directions and rewards. The further back, the more information the protagonist digs, and some conspiracies will be exposed to the sun.