Doomsday Boss

After his wife and her family betray and murder him during the apocalypse, Leo wakes up years before the disaster with every memory of what they did. He immediately divorces his wife, saves a dying billionaire, and becomes his sole heir. With that fortune, he stockpiles massive amounts of food, water, and gear, and acquires a dimensional glove that can store unlimited supplies and upgrade ordinary objects into survival technology. He turns a supermarket into a fortified off-grid bunker and deliberately moves in right next door to his ex-wife and her new boyfriend. When he warns people online that the toxic blood rain will begin at six, they mock him as a lunatic — then the rain actually falls. As chaos erupts outside, Leo sits inside a fully stocked fortress with supreme combat authorization freshly unlocked, ready for what comes next.