A FusionFic can result in some pretty strange combinations of universes. Something like Falling Stars, however, takes this UpToEleven [[ThisIsYourPremiseOnDrugs On Drugs]].

Taking the characters from ''Anime/LuckyStar'' and dumping them into the world of ''VideoGame/{{Fallout 3}}'', [[http://www.fanfiction.net/s/5609557/1/Falling_Stars Falling Stars]] (written by Creator/{{Tastychainsaws}}) pretty much throws a twist into your usual crossover fan fic. Konata becomes the Lone Wanderer, and Kagami and Tsukasa end up as her (initially) unwilling sidekicks. The results are ''not'' pretty.

It has been given a sequel (which is unfinished, and not written by the original author), which can be found [[http://www.fanfiction.net/s/5917629/1/Falling_Stars_The_Second_Great_War# here.]] Yet another sequel, also not by the original author, made to bridge the gap between the original story and the other sequel, can be found [[http://www.fanfiction.net/s/6167933/1/Falling_Stars_The_Other_Tales here.]] The author has also written a story on Minami and Kuroi's early years in the Enclave titled [[http://www.fanfiction.net/s/5951590/1/Sigma "Sigma"]].

Not to be confused with the ''{{TabletopGame/BattleTech}}[=/=]WesternAnimation/MyLittlePonyFriendshipIsMagic'' [[Fanfic/RokassFallingStars crossover with]] [[NamesTheSame the same name.]]

!!This FanFic provides examples of:

* AfterTheEnd: Obviously.
* AllThereInTheManual: The author often tries to explain certain elements of Fallout 3 after every chapter for those unfamiliar with the game itself. He does it less later on.
* AllJustADream: Played with during the events in the Dunwich building. Poor Kagami...
* AntiHero: Kagami builds up lots of evil karma as well as having to deal with drug addiction later on. She arguably becomes something of a VillainProtagonist near the end.
* AnyoneCanDie: Kinda comes with the Fallout Universe, where everybody can be killed. Tastychainsaws even had the guts to [[spoiler:kill some of them off during the epilogue. Now that's a low blow.]]
* BerserkButton: Konata manages to push several of Kagami's buttons...[[spoiler:leading to Kagami giving Konata a WhatTheHellHero speech.]]
* BoomHeadshot: A Deathclaw [[IncrediblyLamePun loses his head]].
* BreakingTheFourthWall: Konata does this a few times.
* BreakTheCutie: To the point where you may think [[Manga/{{Narutaru}} Mohiro]] [[Manga/{{Bokurano}} Kitoh]] wrote this. Then again, what did you expect to happen when you take characters who come close to being {{Trope Codifier}}s of {{Moe}} and dump them in a [[CrapsackWorld radioactive wasteland filled with mutant creatures]]?
* ColonelBadass: Colonel Kuroi, in place of Colonel Autumn. Later she promotes herself to General.
* DarkFic: To some extent.
* DecoyProtagonist: Konata may be following in the footsteps of the Lone Wanderer at first, but make no mistake, this is Kagami's story.
* DeepImmersionGaming: WordOfGod implies that the whole story is derived from the ''Anime/LuckyStar'' characters doing playthrough(s) of Fallout 3, with some joking towards them moving onto ''VideoGame/DragonAgeOrigins''. Then again the actual series does this sometimes.
* DrivenToSuicide: [[spoiler:Ayano, after hearing about Misao's death. She managed to take down the entire saloon made out of metal in the process.]]
** It turns out that [[spoiler:it was a subversion. The epilogue reveals that Ayano died in a freak gas explosion, and not suicide]]
* {{Egopolis}}: [[spoiler:Miyuki takes over the Republic of Dave after her mother (who beats Dave in the election) dies of the Modified FEV.]]
* GoOutWithASmile: [[spoiler:Misao]]
* {{Gorn}}: It is not rated M due to {{Lemon}}.
** Special mentions to chapter 7 of Sigma, though. Tastychainsaws saw fit to actually warn his readers about the amount of gore in that chapter. This is the guy who tossed [[Manga/KOn a tea-sipping all-girl high school pop music band]] into a ZombieApocalypse with no second thoughts.
* JumpingOffTheSlipperySlope, [[spoiler:Kagami, near the end after she believed Konata was dead.]]
* JustifiedTrope: The author attempts to justify certain gameplay elements, such as VATS being a shot of adrenaline from the Pip-Boy or how Stimpacks work.
* LetsSplitUpGang: Done when the group finds Casey Smith's garage.
* MythologyGag: [[spoiler:Fawkes refuses to join Kagami as a follower due to low karma.]]
** Also, [[spoiler:Konata's mother was The Chosen One of VideoGame/{{Fallout 2}}. Likewise, Minami's dad was Jaime, the insane ghoul in the Dunwich Building.]]
* NoPeriodsPeriod: Definitively averted.
* OmnicidalNeutral: [[spoiler:Kagami wipes out both the Enclave and the Brotherhood of Steel at the end of Broken Steel. She also uses the Modified FEV on the purifier, which ends up killing a few of the characters in the epilogue.]]
* OnlySaneMan: Lampshaded by Kagami.
* OurVampiresAreDifferent: Minami, who replaces Vance in the story.
* ParentalAbandonment: Every bit as much a plot point here as it was in ''Fallout 3''.
* [[spoiler:{{Retirony}}: Poor Misao...]]
* ShellShockedVeteran: Kagami at the end.
* ShoutOut: Plenty of them (we ''are'' dealing with [[{{Otaku}} Konata]], after all).
* [[spoiler:TakingYouWithMe: Kuroi had a plasma grenade tucked away...]]
* TitleDrop: [[spoiler:The titular Falling Stars refer to the KillSat at the end of Broken Steel that Kagami uses on both the Enclave and Brotherhood of Steel.]]
* TookALevelInBadass: Tsukasa, after returning from Point Lookout.
* WallOfText: Due to issues with the author's word processor, this occurred at the end of Chapter 9, making it nearly unreadable. However, the author fixed this error and made the chapter actually readable.
* WhereAreTheyNowEpilogue
* YouGottaHaveBlueHair: Done with some [[{{Neologism}} word play]], as certain characters are referred to as "blunette".