''Full Life wo Sagashite'' was a crossover between WesternAnimation/TheSimpsons and Manga/FullMoonOSagashite, with Lisa in Mitsuki's role. Similarly to Fanfic/LisaFitzgerald, it was available on the ''Simpsons Realities'' fansite before its deletion. Thankfully, it can be downloaded from [[https://web.archive.org/web/20120207131911/http://realities.simpworks.com/category/fic#fanfic4 this mirror]], courtesy of the Wayback Machine.

When Lisa learns that she only has a month left to live, she decides to make the most of her remaining time on Earth. With the help of the 2 shinigami sent to collect her when her time comes, she transforms into the teenager Leese, saxophone superstar. But will it be enough to help her find the boy she fell in love with long ago?

!!This fic contains examples of:

* [[spoiler: BackFromTheDead]]
* BigEater: Meroko.
* TheCameo: Eichi Sakura briefly appears [[spoiler: as a lawyer who sues Leese for using Japanese anime songs without paying royalties]], and in Chapter 2, Homer talks to someone who is clearly [[Anime/ALittleSnowFairySugar Sugar the Snow Fairy]].
* {{Crossover}}: With Full Moon wo Sagashite. [[Manga/PitaTen Sasha and Misha also make an appearance]].
* DudeNotFunny: In-universe example, with Lisa and Takuto's reactions to Meroko's BlackComedy joke.
* IllGirl: Lisa has a brain tumor that will kill her unless she has surgery, but she doesn't' want to go through with it because it will lower her intelligence.
* {{Irony}}: Meroko's love for Takuto is unrequited, but when he sees Misha (who shares some of Meroko's qualities), he's smitten.
* JerkWithAHeartOfGold: Bart. Takuto also qualifies.
* LovesMyAlterEgo: Bart gains a crush on Lisa's teenage form.
* MagicIdolSinger: Well, magic ''saxaphone player'', but it still follows the template of the trope.
* MentorMascot: The shinigami in plushie form.
* OlderAlterEgo: Leese.
* RunningGag: Kitty!Takuto reminding people to watch TV a safe distance from the screen; people saying that Dr Nick would've probably done something different from Dr Hibbert.
* [[spoiler: SurpriseIncest]]: The boy Lisa's been in love with all these years? [[spoiler: Turns out it's ''Bart''. Naturally, they're both squicked by it.]]
* SweetTooth: Meroko ''loves'' ice cream.
* TakeThat: Towards several anime and manga. Specifically, SadamitsuTheDestroyer, Manga/TokyoMewMew, Manga/SakuraDiaries, Anime/KirbyOfTheStars and Manga/KokoroLibrary.
* TransformationTrinket: Unlike other examples, Lisa swallows it to prevent Meroko from confiscating it, so the shinigami have to help her transform.