After the departure of Minos' group, only 17 years had passed for the forces left behind either in the Spiritual World or in The Adamant Land.
However, even though very little time had passed since Minos' departure, a lot had happened in the meantime.
Currently, Rowan Stuart was at level 83, far below the level 106 of his twin sister, Hollie, who he had always been stronger than during her time in the Spiritual World.
But Rowan did not know what he had failed to 'achieve' by staying behind in his family's homeworld to run the empire in his father's name.
Being in Dry City, where he had been ruling most of his world, he was satisfied with his position, having married and had his first child in those 17 years.
Minos' first grandchild was a boy named Raiden Stuart, the first son of Rowan Stuart, Emperor of the Black Plain Empire, and Kyla, the former Nine-Tailed Fox, daughter of Emlyn.