The story takes place in a broken space called "Forgotten Star Realm". This place is composed of floating islands and "star rivers" connecting the islands. Living things rely on a cosmic energy called "star attraction force" to survive. The "power of star attraction" can sense the mood of intelligent creatures. Those with a peaceful mood can more easily guide them to nourish all things, while those with a mixed mood can cause them to go crazy.
* **Core Rules:** The core survival and construction method is "Farming Stars". People use the "power of star attraction" to cultivate "starlight fields" on special "star soil". The "star fruit" produced by the Starlight Field can restore the mind, purify water sources, and even strengthen the island. However, the process of "cultivating stars" is extremely labor-intensive and requires patience and a pure heart. Any act of eagerness for quick success will cause the star field to wither, or even cause the "star attraction power" of the entire island to be disordered, causing the "star wither" disaster.