By the time Tengen Toppa Starts, we discover that evolution has practically stopped throughout the galaxy due to the anti spirals control over all spiral beings. This was probably done to keep the space monsters from returning, because evolution was the main cause of their appearance. The first humans must have realized that evolution was the cause for the space monsters to come, and halted their evolutionary process, ceasing their use of spiral power and become the anti spirals. The final request given to Simon by the Anti-spiral? To protect the universe. From what? The Space Monsters. And here is one for the softies: Nia? She must have re-encarnated from Nono, both of them spurring on their Heroes/Loved ones to save whats dear to them at the cost of their own lives.

Feel free to say I have no life