After Rebirth, He Became the King of Darkness

Time travel, rebirth, dark world. The protagonist travels from his hometown to the dark world and is forced to participate in the reset of the world. In the not-too-distant past, there was a passage in the hands of the Dark World. However, in order to bring peace to the world, the former Dark Lord reached a compromise with the Light World and gave up the passage. After seizing power, the new Dark Lord tried to find a passage to the past in order to completely dominate the world, modify the contract with the Light World, and change the direction of world development. Therefore, look for passages and opportunities to cross at all costs. Whether the crossing can be successful depends on meeting many conditions. The first is the expansion of the sun (unknown), the second is the black storm (unknown), the third is the sea of ​​​​return to ruins (unknown), the fourth is the collapsing world (man-made), and the fifth is the guidance of the prophet (unknown). But the protagonist has stepped from an out-of-school student to the sight of the Lord of Darkness, and is forced to participate in the war between darkness and light!