When Yila and the Demon King's army came here, they marched, but they didn't need to work as hard when returning. Everyone chose to take ships back... ships piloted by the sea demons.
Yes, everyone confidently sat on the ships piloted by the sea demons because it was clear to all—they no longer had any chance to rebel or do anything.
Capsize the ships? Then petrify the sea surface.
Wrong course? The Mechanical Bodies could sense the direction of the Demon King Territory.
Head into a dangerous sea full of magic beasts hoping to die together? The danger would be for the magic beasts instead.
Moreover, at this moment, the three leaders among the sea demons were gathered in Yila's room, being scrutinized by his gaze... of course, Satan Ye was there too, and the other leaders were watching from outside the room.
"We were just..."
As the Merfolk Leader tried to defend herself, Yila cut her off: "You are just a bunch of traitors, despicable betrayers, and slaves who are unnecessary."