Solace Seed is the minimum unit of human survival device that separates from Biosolace when Biosolace loses function or can no longer guarantee the Exodist's long-term survival.

Solace Seed provides air, water, nutrition, body temperature maintenance, radiation shielding, sleep, biological stabilization, and a minimal virtual reality environment. It preserves the continuity of the Exodist's existence until the Exodist receives a new Biosolace or docks at a safe station.

Solace Seed is designed on the premise of docking with an orbital station capable of supplying a specific type of energy, especially Solace Harbor. At this time, the Exodist must be able to know the pre-docking state, approach state, docking completion state, energy supply state, and new Biosolace preparation state through signals, markers, voice guidance, and environmental changes within virtual reality.

Solace Seed begins from the recognition that Biosolace is not an immortal device. Just as Earth is the life base for Terrans but cannot perfectly guarantee their survival, Biosolace also cannot be guaranteed to function stably for longer than the lifespan of the Exodist.

If Biosolace is the Exodist's home, Solace Seed is the minimum possibility of return that remains after that home disappears, or the small seed that leads to a new home.