Young Rorona Really Is Adorable!
Have a look at the three ateliers in Atelier Meruru.
I suspected as much based off this:
But yes, young Atelier Rorona really is adorable:
A retailer (specifically Nihonbashi Sofmap, my favorite source for little retail insights) Tweeted this image earlier today from a retail promotional video.
He also provided similar images of Meruru and Totori, who should be younger than Rorona.
One day, we will find out what form of witchcraft made Rorona so young. But until then, more adorable screens and artwork, please!