Amazing idea, suffering from a lack of polish on several fronts.
I love the idea of something wholesome gone wrong, and I'm pretty sure I've never seen radishes as the main antagonist in a story. Daikon Sphere is a great name. Full marks for Theme.
The typography is a bit messy, particularly on the interior spread, and there are grammatical issues with the text. The most distracting of those is switching back and forth between referring to the players in the second person, and the third person. Taken together, it makes the module a bit hard to follow.
I feel like there's an ordering issue for the panels on page one. The centre panel, which is the back of the pamphlet, has the info I would expect to find on the inner flap (left panel), and vice versa.
The locations are individually good, but I don't love that the players are forced to encounter them in a fixed sequence. As a player, after leaving each location, I'd expect to have some choice in where to go next.
Anyway, I think there's a super cool story here that deserves more design love. It's hard to fit a whole planet into a trifold, so maybe this is one where you'd want to treat the jam version as a prototype and go back to do a whole zine-format treatment of the same idea.