My Sister Leni is a The Loud House fanfic by Gumball2 themed around Leni Loud. It can be read here
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The fanfic begins with Leni starting kindergarten. Throughout 53 chapters it tells the story of Leni's childhood and how she relates to others. In the story, Leni is on the autism spectrum, though this isn't revealed until several chapters in.
My Sister Leni provides examples of:
- Annoying Younger Sibling: At the start of the fanfic, Lori often finds Leni annoying and embarrassing. She doesn't understand how being autistic works and just thinks that her sister is "weird".
- Bland-Name Product: On top of the canon examples, there are several examples such as 16.5 magazine instead of 17 and "EyePage" instead of "Facebook".
- Book Ends: The story both begins and ends with a picture being taken.
- Brainy Baby: Lisa could speak coherent sentences at one month old. She also had better control over her body movement than a normal newborn.
- Broad Strokes: A few details in the universe are different from canon, such as Luan not going too overboard during April Fools or Lisa not working with dangerous chemicals.
- Disabled in the Adaptation:
- The fanfic is based on the common headcanon that Leni has a psychological/neurological/developmental disorder, which is why she acts like a Dumb Blonde.
- Lisa is also later revealed to be autistic as well, but how it manifests with her is vastly different.
- Does Not Like Men: Prior to Lincoln's birth, Lori had a phase where she hated boys. This is thanks to an annoying boy at her school that soured her opinion on boys.
- Doorstopper: My Sister Leni ended at 52 chapters and almost 275k words.
- Double-Meaning Title: The title could refer to either this Leni, or her namesake, Lori's stillborn twin.
- Everybody Hates Mathematics: In first grade, Lori's teacher tries to make subtraction fun to learn. None of the kids find it fun.
- Expy: Leni watches episodes of My Pretty Pony featuring a curly maned pony named Rosy Cake and a purple pony named Twily. They're references to Pinkie Pie and Twilight Sparkle of My Little Pony: Friendship Is Magic.
- Eyes Always Averted: Leni didn't look people in the eyes as a child. She was repeatedly chided for this.
- Fangirl: Leni is very fond of The Land Before Time series and is especially into Ducky. Her signature "raptor arms" pose from throughout the series comes from her imitating Ducky. She also developed an interest in Princess Pony
well passed the age where it would have been socially acceptable, although she hides that from others. - Gender-Blender Name: It's noted that "Leni" is usually spelled differently and is mainly used for boys:Rita: When Lynn and I first saw that one in the baby name book, we were surprised that it even existed; the only spellings we knew were 'Lenny' and 'Lennie' and they were both for boys. We originally disregarded it in favor of more traditional girl names like Lauren or Linda. But in the end, I went back to Leni because it's rare. I want her to truly feel unique, that she is one of a kind.
- Girl-Show Ghetto: Just hearing the title of Princess Pony makes even most of the girls in Leni's kindergarten class cringe. Later on, most of other Loud siblings find a Princess Pony item of Leni's and make snide comments about it. When Lincoln claims it, they poke fun at him for liking a saccharine show like Princess Pony.
- Graduate from the Story: My Sister Leni ends with Leni going off to university.
- Hollywood Autism: This fanfic sets out to avert the usual stereotypes associated with autism as portrayed by most media. It also helps that the author was diagnosed with PDD-NOS.
- Implausible Hair Color: Lincoln was born biologically brunette, but his hair started paling at a month old.
- Internalized Categorism: In later chapters, Leni starts feeling like she's a bother to others.
- Literal-Minded: A lot of misunderstandings occur because Leni takes things more literally than most other people.
- No Social Skills: Played for Drama with Leni, who has a lot of quirks that weird out others. Her lack of social skills cause some issues, such as being Innocently Insensitive. Therapy helps Leni gain more social awareness.
- Prematurely Grey-Haired: it's shown that Lincoln was born with brown hair. His hair began turning white at around 1-month. There's no health reason for it; his hair just changed colors.
- The Stoic: As a young child, Leni would often be stoic and "blank" looking on default.
- Theme Twin Naming: Leni is named after Lori's stillborn twin sister, and lampshades the confusing aspect of having two similarly named siblings.
- Tragic Stillbirth: Leni's namesake, Lori's twin sister. Leni only found this out after going through an old diary.
