The Hero Returns

Reading The Hero Returns manhwa, The Hero Returns manga with alternative name: 영웅 회귀하다 with Description: Dungeons mysteriously appeared, and with them a relentless invasion of monsters that engulfed civilization. Even the Awakened, human beings with unique skills for combating monsters, were powerless to halt the annihilation of the Earth. The most potent Awakened, Sungin Kim, was ultimately the only survivor. After passing away, Sungin awakens twenty years earlier as Soohyun Kim, a quiet high school student. He doesn’t know how or why he was brought back, but he is aware that this is his second chance to save the world and earn his rightful place in the pantheon of heroes.