The Sun God, Nika, have reborn 3 times and Luffy was his 4th time and the incarnation. My guess is anyone with D in the name are the descendants of the first until third world or void century. They're the first mankind who were enslaved by the gods while Imu was the god who represented land, tree, and water now they represent themselves as sky god because they currently living there.
Maybe that's the reason why they persecuted people who have D in their names. Luffy's grandfather choose to surrender while the rest would rather become pirate. There's a reason why the higher ups want them gone because they could become a vessel for Nika.
The Sun God, Nika, have reborn 3 times and Luffy was his 4th time and the incarnation. My guess is anyone with D in the name are the descendants of the first until third world or void century. They're the first mankind who were enslaved by the gods while Imu was the god who represented land, tree, and water now they represent themselves as sky god because they currently living there.
Maybe that's the reason why they persecuted people who have D in their names. Luffy's grandfather choose to surrender while the rest would rather become pirate. There's a reason why the higher ups want them gone because they could become a vessel for Nika.