On an isolated island called "Island of Order", memory is the only currency. The memory seeker codenamed "Zero" trades the joys and sorrows of others in the memory exchange day after day in order to retrieve a key memory that was deprived of him. He firmly believed that that memory was the only proof of his existence. Until a mysterious woman named "tide" appears, she brings harbingers of storms and subversive questions: When memories can be forged and reshaped, what is left of the "truth" you are persistently pursuing? Zero is forced to embark on a dangerous journey, on the edge of the Sea of Oblivion, facing the truth and lies about his identity.
---
