Equality for All Beneath the 381

When peace in the universe is threatened, when someone sparks a war between star systems, when dark-matter creatures from the void of another world invade this universe, Vittorio Veneto will show them that shipgirls can do more than sail across the blue seas: they can conquer the ocean of stars. Warning ⚠️: In this story, Bismarck is the protagonist's mom... I mean, Germany and Italy are one big family, right? They definitely are, right?