In the Apocalypse, Every Level-Up Gets Me a Wife

(Apocalypse + Invincible Protagonist + Lots of Beautiful Women + Decisive + Wish-Fulfillment + Not-So-Smart System) He's in the apocalypse, and after being harmed by a bleeding-heart do-gooder, he gets bitten by a zombie. Just as he's about to turn into one, he obtains a System. From then on, every ten levels he gains a new partner. Each partner has special abilities, and every one of them is powerful. From then on, he has no worries about food or clothing, and gets busy making babies in the apocalypse.