Infinite Ryvius

In the year 2137, an anomaly known as coronal proliferation caused the Sun to eject massive amounts of photons containing Geduld plasma and abnormal gravity into the solar system, forming a sea of light. The radiation and abnormal gravity within this sea far exceeded what humans could withstand. This is the Geduld Phenomenon. Due to the instability of the Geduld, Earth's future was precarious; all of humanity, and indeed every planet in the solar system, faced being submerged by this vast ocean of ionized abnormal gravity, the Sea of Geduld. The story centers on over 400 young people interning at the space station Delta. They arrived aboard the "Liebe Delta" (the Dreamer) to undergo training from instructors to become professional astronauts. However, due to an attack by an unknown force, the Dreamer began sinking into the Sea of Geduld. While protecting the trainees, all the instructors tragically sacrificed their lives. Facing death, the 487 young protagonists used their ingenuity to discover and board the "Vaia-class" cosmic submarine Ryvius, hidden inside the Dreamer, beginning their arduous journey for survival that left behind memories which could never be erased.