Survive the Apocalypse with Space

[Two male protagonists + apocalypse + space + raising cubs + having super powers] The end of the world is coming, and space is at hand. Not afraid of zombies or extreme weather. Stock up, survive, rebuild your home. Kill the zombies at the front, kill the enemies at the back, and then have a sweet love at the same time. Huh? Where did this little sweet baby come from? If no one wants it, I will take it away and raise it myself.