On the "Island of Memory" that has been forgotten by the world, the only tower guardian is guarding countless stripped memories day after day. His world is an eternal loneliness composed of tides and whispers. Until one day, a mysterious woman named Ling broke in on a lone boat. She was looking for a "core memory" that could save the outside world from "memory decline". Her arrival not only broke the tranquility of the isolated island, but also touched upon the blocked past. When the duty of guardianship collides with the desire for salvation, when personal forgetfulness is connected with the survival of the world, is the light of the lighthouse the hope that illuminates the future, or is it a prison that imprisons the past?
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