7 Seeds Gaiden summary:
The final act of 7SEEDS. What became of the people who survived to the end? Young men and women were cryogenically frozen as part of the “7SEEDS Project” in order to prevent the destruction of mankind. They came together and safely escaped from the collapsing underground. After taking on such daring struggles, they are determined to survive in this world, and they have now begun working to build a new “life” on the island of Sado.