Even though he searched for Vader Ocean over and over again, the kingship failed to find Vader Ocean. After months of hard searching, his health deteriorated obviously. Garit saw that his master had been thinking about the world and had to say something to remind him that it would hurt his heart.
"So far, I know the world is gone."
Don't say it, but I know it means death. It was too sad for the courtiers that the kingship was destitute and gazed intently at his eyes. Garrett, in particular, saw the kingship coming, but his consciousness awoke when he was only a crown prince, when he saw him tripping over wine like firewood.
"Let's go back, Your Highness. Although you have ended the world, you still have people to protect. Don't abandon people."