Idk if it's reasonable to infer that the castle is on the moon, but I'd presume it's hanging out in space somewhere. Maybe even orbiting the earth. Literally speaking, Paech seems to be the antagonist, but I think the authorial intent is that Bowser took her instead, and MarioStar just doesn't know how to phrase that properly (he implies that he wrote this himself instead of using Google Translate).
Making terrible posts since 2014