Ange could no longer sense Little Ghost unless his consciousness returned to his main body. However, returning to his main body didn't necessarily mean he could survive, and even if he wanted to use the Spatial Slingshot again, it would take a long time and he might not return to the same body.
Therefore, Ange decided to visit the so-called Friel Royal Astronomical Institute and use the Stargazing Mirror to see if Little Ghost had followed him.
"You, stay here, Plant Trees," Ange said to Wrench.
"Ah? Do I have to? I want to go too, and I don't even know how to plant trees. I would kill the trees," Wrench said, as if he had been struck by a bolt from the blue. Did Ange really want to leave him here alone?
"I'll teach you. Just follow the instructions and you'll be fine," Ange unfolded a piece of paper, densely filled with 675 instructions which made Wrench dizzy just looking at them.