The sadistic sheriff on board Neuron. Though Vanilla is extremely strict in enforcing his authority upon the passengers (and enjoys doing so thoroughly), he is not above corruption, and is willing to make deals, accept bribery, or steal memory chips for himself. He also has a weakness for extremely cute girls. ~!In spite of his shortcomings, however, he is surprisingly devoted to Kaiba, and has gone through great lengths to insure his safety (albeit not knowing his true identity, and in Chroniko&#039;s body). This devotion comes to a head in episode 7, while the two are on the run from the law. He transfers Kaiba&#039;s and Hyo-Hyo&#039;s memories elsewhere as their ship is under bombardment, knowing full well that they would be unable to escape, and also telling Kaiba that he had back up bodies elsewhere to comfort him. However, after making sure that Kaiba is safe, Vanilla reveals that there was no such insurance for him, and he perishes alongside Chroniko&#039;s memoryless body when the ship is destroyed.!~

It is now possible to store memory data, so that the death of your body is not actually "death". As memories are stored in databanks, they can be "transferred" to new bodies. Because so-called "memory trading" now occurs, it is now possible to steal memories and illegally alter them. 
Society has fallen apart as authority has become lost and stagnant. 
One day, a man awakens in a ruined room. His name is Kaiba. He has no memories, but he does have a pendant with a picture of an unknown woman inside. 
In the skies are roiling clouds and electrical storms, impossible to pass without losing one's memories; above them lies the elusive realm of the rich and powerful, who barter others' bodies and memories for their own enjoyment and longevity. Below lies a troubled and dangerous world where good bodies are hard to come by and real money is scarce. 
After suddenly being attacked, Kaiba escapes into space, and during his travels meets all sorts of people and regains his memories. Throughout it, he continues to be troubled by the world's problems, as well as his own existence. And what of the woman in the pendant, Neiro?

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