Shinpachi, yes, thank you very interesting. It is somewhat similiar to the Greek/Roman story of Proserpina:
Venus, in order to bring love to Pluto, sent his son Amor also known as Cupid to hit Pluto with one of his arrows. Proserpina was in Sicily (an island outside of Italy), at the fountain of Arethusa near Enna, where she was playing with some nymphs and collecting flowers, when Pluto came out from the volcano Etna with four black horses. He abducted her in order to marry her and live with her in Hades, the Greco-Roman Underworld, of which he was the ruler. Notably, Pluto was also her uncle, being Jupiter's (and Ceres's) brother. She is therefore Queen of the Underworld.
Her mother Ceres, the goddess of cereals or of the Earth, vainly went looking for her in any corner of the Earth, but wasn't able to find anything but a small belt that was floating upon a little lake (made with the tears of the nymphs). In her desperation Ceres angrily stopped the growth of fruits and vegetables, bestowing a malediction on Sicily. Ceres refused to go back to Mount Olympus and started walking on the Earth, making a desert at every step.
Worried, Jupiter sent Mercury to order Pluto (Jupiter's brother) to free Proserpina. Pluto obeyed, but before letting her go he made her eat six pomegranate seeds, because those who have eaten the food of the dead could not return to the world of the living. This meant that she would have to live six months of each year with him, and stay the rest with her mother. This story was undoubtedly meant to illustrate the changing of the seasons; When Ceres welcomes her daughter back in the spring the earth blossoms, and when Proserpina must be returned to her husband it withers.