Simulating Ten Levels of Apocalypse in Advance, I Invest in a Policewoman Girlfriend

[Advance simulations + ten apocalyptic scenarios + the female lead becomes incredibly capable later on + stockpiling supplies + Devil Fruit + a team of superpowered people]

The protagonist, fully prepared and waiting for the final apocalypse: "Huh? Where... where are the enemies?"

The female lead: "They're all gone."

A story about a male lead who works himself to the bone early on to build up his resources until he's invincible, only to discover that his enemies can't even get past his wife.

The protagonist: "Keeping up the act is exhausting."

The female lead: "Honey, thank goodness I have you. Mwah~"