In the Last Days, My Wife Is Openly Cheating

After the great disaster in 2027, I was sold to a black-hearted company by my beloved girlfriend and became an underground rat-man. After living for thirty years, he accidentally married a black-hearted female boss. Seeing the end of the world, he was kicked to death on the eve of happiness. In my next life, I hold the memories of my previous life in my hand, vowing to drink green tea, exercise, and hoard supplies, so that I can change my destiny in the apocalypse and become the ultimate winner! Wait... Honey, why are you here? What do you mean by having a system? No, in this new life, shouldn't the protagonist be me? ! ! ? ? ?