Seven Days to Armor the Earth: Season 2

After saving Earth from subterranean monsters, humanity prepares to enter the interstellar age—until the planet is thrown off course. To correct its path, the hero links his mind to a planetary system and falls into another apocalypse loop. After witnessing alien warships destroy Earth a hundred times, he finally finds one chance: unite the nation, build armor around the planet, and turn humanity’s home into a weapon.