Lincoln's Reign

Lincoln's Reign is a The Loud House fanfic created by Geo Soul on Fanfiction.net. The story serves as a soft reboot of the author's previous work, The Reign of Lincoln. The plot is simple: Leni wants to create a harem for her brother Lincoln but it's soon revealed that there's more to her plot then meets the eye as of Chapter 5 the story has become a Light Crossover with the Bible Black Series. The story can be read here.

As might be inferred from that description, the work is NSFW.

Tropes used in Lincoln's Reign include:

Abusive Parents: in chapter 6 Rita and Lynn Sr thought it was a good idea to use Leni (a child mind you) as a Prostitute.
Big Bad: Leni is this and the Villain Protagonist. Doubly so for Lincoln.
Big Sister Instinct: Leni flies off the handle when she learns that Lori and Lynn were blackmailing Lincoln and Lucy. The less said what she did to Chandler after he attacked Lola and Lana, the better.
Bigger Bad: Reika Kitami from Bible Black shows up in Chapter 5 to reveal that she's more or less responsible for how Leni turned out.
Body Horror: The results of Leni's "pig serum".
Parental Substitute: Leni tells Kitami that She sees her as more of a Mother then Rita and The demon admits she feels the same about Leni.
Break the Cutie: Both Girl Jordan and Miss Dimartino go through this in chapter 3 courtesy of Lincoln Leni subjects Lucy to this throughout Chapter 2 Justified in that she did in order to train her.
Crossover: See Bigger Bad above.
Even Evil Has Loved Ones: Leni genuinely Loves Lucy and actually wanted to help her with her wet dream problems. She also clearly adores Lincoln and the twins. (Given what she did to Chandler after he attacked Lola and Lana that should be obvious.)
Even Evil Has Standards: Leni of all people was disgusted by Luna's Insane obsession with young boys. Say what you will about Lincoln but even he draws the line at having Lucy eat his vomit
Half-Human Hybrid: The results of Leni's "pig serum".
Shout-Out: In chapter 6 Leni mentions Kitami giving her a Blessing when the full moon arrives this is a Reference to One of the Bible Black OVAs where it's stated Kitami's full power is said to come from the Full Moon.
Hero Antagonist: Although she's yet to make an appearance it was confirmed that Ronnie Anne is set to be this.
Nightmare Fuel: Leni's Pig Serum. What is it, you ask? Why, it's just a potion that'll turn people into human-animal hybrids that only have one thing on their minds: breeding! To make things worse, Leni has other serums that do the same thing but with different effects.
- What Leni did to Chandler is downright... horrifying to say the least. It gets worse. How, you ask? She used him as an incubator for small creatures known as Lust Imps which then proceed to treat him to Ludicrous Gibs and then infect Carol Pingry.
- Luna... Just Luna in general -- she's a shameless and unabashed pedophile who has no problems spying on young children and doing unsavory things to them -- not to mention she even ends up raping Sam's brother Simon.
Moral Event Horizon: Lori and Lynn cross it when they blackmail Lincoln and Lucy. Lincoln crosses it in Chapter 3 when he mind-breaks both girl Jordan and Miss Dimartino. Judging by how Leni has reacted to them it seems like Rita and Lynn Sr may have crossed this at some point. Luna crossed the line when she raped and rendered Simon brain-dead.
Shotacon: Luna, horribly so.
Villain Protagonist: Leni, and Lincoln even more so.
Wham! Episode: Chapter 5 has one thing worthy of note as we finally get to see Leni's teacher, who is... Reika Kitami of Bible Black. Chapter 6 is this despite its short length as we finally learn the reason why Leni hates her parents.