According to Calvino,
A queen, unable to conceive children, while staring at an apple tree, thought "why can't I give birth to children as easily as the tree bears fruit?" and just like that, days later, she gave birth to an apple.

A beautiful apple, that almost seemed fake how Beautiful it was, that they (king and queen) putted on a tray on a beautiful terrace, but every now and then a girl came out from the apple, beautiful and young, when no one saw her, to comb her hair.

Another King noticed her from a balcony not too far away, and, overwhelmed by her beauty, fell in love with her. She went to the other king and did everything to buy the apple.

He took the apple to his palace and watched her every day, and nothing else, she just drank water and did her hair. But once he had to go away and assigned a guard to watch over the apple at all costs. The queen, who had been watching the king disappear for days like an obsessed, put the guard to sleep with a powder and slipped into the room, found nothing at first glance, then realized that there was only the apple, incredulous as to how he could be so obsessed with an apple, she stabbed it several times with a stiletto, but the apple began to bleed and filled the whole room with blood, and the girl, also wounded, came out of the apple in that bath of blood. Another's envy, wounding her, freed her.