Another Code (Nintendo Cinematic Universe)

Another Code is a Japanese graphic novel series.

Two Memories
A teenage girl goes to a seemingly haunted island to search for her father.

Two Memories

 * Eleven years after the disappearance of her parents, and two days before her fourteenth birthday, Ashley receives a package from her missing father containing a birthday card and a device called a DAS.
 * Since the disappearance of her parents, Ashley had been experiencing nightmares.
 * The DAS, programmed to respond only to Ashley's biometrics, contains a message from her father, claiming that he is waiting for her on Blood Edward Island.
 * The next day, the day before her birthday, Ashley rides over to Blood Edward Island with her Aunt Jessica on a boat, but Ashley's father is not there to greet them.
 * Jessica goes to look for him, but when she doesn't return, Ashley ventures out to search for both of them.
 * While exploring the island, Ashley also befriends D, a ghost who has lost his memories.
 * D is only visible to Ashley, and wants to learn the truth behind his death. Together they enter the Edward Mansion, each looking for answers to their own questions.
 * As they explore Edward Mansion, Ashley and D begin to learn the history behind the Edward family, who are rumored to have all died one after the other, resulting in the island's name. At the same time, they begin to unravel the mystery surrounding Ashley's father, Richard, and their invitation to the island.
 * Ashley eventually discovers that her mother, Sayoko, was murdered on the night of her third birthday, her recurring nightmare being a vague memory of that night. She also learns about "Another", a device with the ability to replace someone's real memories with false ones, which was created by Ashley's parents while they worked as memory researchers at MJ Labs. Its purpose was to help those who have PTSD and other forms of psychological trauma, by replacing their traumatic memories.
 * Richard has the memory of being Sayoko's murderer and suspects his memory was replaced. During his time alone on Blood Edward he had developed "Another II", which allowed someone's true memories to be verified and returned, and locked it to the DAS, allowing only Ashley to activate it.
 * After she activates "Another II", Ashley is relieved to find out that her father's true memory of the night of her mother's murder was, indeed, altered to make him remember shooting her mother. She returns his real memory of that night.
 * Ashley and Richard end up confronting Bill Edward, an old friend of Richard and Sayoko, who was also a scientist.
 * While holding Richard at gunpoint in a cave, Bill forces Ashley to remember the night of her mother's murder, and she realizes that Bill was the culprit.
 * Flashback: Bill had been in love with Sayoko, however, she was happily committed to Richard. After they had finished the development of "Another", Richard and Sayoko tried to keep it out of reach of those that might use it for malicious purposes, and Sayoko eventually gave birth to Ashley, making the decision to give up being a scientist for good, to focus on her husband and daughter. In his jealousy and his rage over Sayoko's "betrayal", Bill broke into their family home to steal back "Another", shooting Sayoko.
 * Just as Bill is about to shoot Richard, D appears before him and tells him that he's "making Franny cry"; the shook causes Bill to fall down a nearby drop, to his death.
 * D recovers his memory:
 * D's real identity is "Daniel Edward", a young boy from the Edward family. Daniel's uncle shot and killed his father in a tragic misunderstanding over inheritance. Having witnessed this, D ran in fear from his uncle into the cave, where he fell to his death; the last thing he saw was his uncle's outstretched hand, attempting to save him. After this incident, the uncle shot himself out of guilt, and his daughter, Franny, left the island, as the sole survivor of her family. She became the mother of Bill Edward.
 * Having finally found his answers, D is able to depart to the afterlife in peace.
 * Richard and Ashley meet up with Jessica, and the three leave the island, to now be "together forever".
 * Sometime later, Ashley receives a letter wishing her a happy "sweet sixteen".

Two Memories

 * Based on Another Code: Two Memories.