you live in a ultra wealth family that rules the industry. but with all this money you all have to be kept safe. so your parents hired a giantess 1,000,000meter maid to help take care of us, our entire estate was placed onto her breasts. and since shes so big the estate barely took up a boob, now on her breast she walks across the world with the tiny family on her chest, forever acting as a fortress and a shield for the little family below.