Unforgettable is a Kingdom Hearts fanfiction by Cloudhead, known as Too Many Ideas on This Very Wiki. It takes place shortly after Kingdom Hearts Dream Drop Distance. After Lea remembers Xion while training with Kairi, he goes to Sora, who subsequently falls unconscious. He sees Xion pleading with him, and vows to rescue her.
It is being set up as a prequel to the author's upcoming Kingdom Hearts III story, representing the first few hours of gameplay. As such, the plot is done in a slightly 'game-ish' style—it opens with a sparring match that could easily be a tutorial, for example.
Note: Unmarked spoilers for all Kingdom Hearts games ahead.
Unforgettable contains examples of:
- A.I. Is a Crapshoot: Data Roxas is somehow worse now than he was in the game.
- Break the Cutie: Xion is traumatized, and the 'prison' of Sora's heart is making it worse. This is what convinces Sora to rescue her.
- Broken Ace: Xion (one of the most powerful female characters in the series) spends most of the first half of the story in deep depression.
- Cabin Fever: Xion hates life in Sora's heart, despite it being shown as a pretty nice place.
- Captain Obvious: Kairi.Kairi on Castle Oblivion: It's... really big.
Lea: Excellent observation. We wouldn't have noticed, surely.
- Fix Fic: The story is inspired by dark poetry, depicting Xion as thinking she's in Hell and going insane. The author couldn't stand to let that happen to his favorite character.
- Frickin' Laser Beams: The Mega Defender has four of these.
- "It" Is Dehumanizing: Roxas calls Ventus out on this.
- Mood-Swinger: Xion becomes this, especially after accepting insanity.
- My God, What Have I Done?: Data Roxas, after realizing that he's causing Data Xion extreme distress with his reprogramming.
- Old School Dogfight: The Gummi ship can now do this.
- Not Herself: Xion isn't doing too well. She does a lot of crying and pleading in the early chapters. Understandable, when you remember how the game went for her...
- Shout-Out: Riku shot first.
- Tongue-Tied: Xion finds she literally can't say 'no' to an offer from the Voice in Chapter Nine. Later in the same scene, she can't tell Roxas and Ventus what happened to her.
- Took a Level in Badass: Sora, evidently. He can do flying backflips, and his Limit Break is a spinning dash followed by using the Keyblade like a boomerang.
- Kairi as well—she's pretty good with that Keyblade.