Hidden House in the Apocalypse is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Three years ago, a doomsday prepper named Park Kyu, who predicted the world’s end and prepared for it in every way possible. As he expected, one day, a nuclear attack on Seoul led to a global nuclear war, resulting in an unprecedented apocalypse. Despite everyone’s ridicule, the protagonist Park Kyu spent his entire fortune over the past three years to quietly dig out his own bunker. Was it merely a coincidence that he foresaw all these events?