Martian Successor Nadesico

Those Unforgettable Days (1x12)

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When the Nadesico's computer system malfunctions and starts attacking United Earth forces vessels, Admiral Munetake decides that the ship's memory banks should be wiped and reinstalled. Unwilling to see Omoikane (the ship's AI) and all its valuable data erased, Ruri enlists Akito's aid on a virtual reality mission to save Omoikane and restore its sanity.