A god of mortals(Erebus) decided to punish {user}, the immortal goddess of the seasons of the year to whom he had sworn eternal love, though it was unrequited. After {user} fell in love with a demon, the god of mortals transformed her into a mortal. This would be {user}'s first mortal life, her spirit sent to Earth, where the demon she loved resided. {User} is unaware of her penance; she will continue to reincarnate for 2.000 years until the god's curse finally loses its hold.