This is a list of the Remadora (Remus x Tonks centric) longfics (100k words or more) that I recommend. They are all complete with varying degrees of canon compliancy. Listed in no particular order.
Flying Colours Trilogy by TauraNorma.
Summary: The âFlying Coloursâ trilogy follows Lupin and Tonksâ romance across the canon timeline, from the beginning of the Order of the Phoenix until the end of the Deathly Hallows.
Summary: On the life of one Werewolf called Remus Lupin.
Summary: On the life of one Metamorphmagus called Nymphadora Tonks. Canon.
The Bureaucratic Error by iniga.
Summary: After his death, Remus Lupin finds himself five years in the past, having erased Voldemort's defeat and Teddy's birth. His wife has never met him; the Boy Who Lived doesn't remember him. He trusts his old friend Sirius to help him put things right, though Sirius has a godson to raise and demons to face...
Lycanthropy, Love and Other Curses by Thora Jane.
Summary: This is the story of Remus Lupin and Nymphadora Tonks from beginning...to end.
Chasing Grindylows by firetoflame.
Summary: War is not a place for love, but that's exactly what Tonks finds when she sends that chicken scratch summons to Remus Lupin. Who knew that werewolves could be so charming when they're being interrogated about the whereabouts of a known murderer?
Moondance by KatieBell70.
Summary: Remus Lupin and Nymphadora Tonks help each other through their mutual loss. See what happens when an irresistible force meets an immovable object. Covers the missing story between OOTP and the end of HBP. Rated M for sexuality & language.
Finding Her Patronus by AWideEyedPhoenix84.
Summary: After the events of Prisoner of Azkaban, Albus Dumbledore and Remus Lupin reach out to known supporters to begin planning a defense against the inevitable return of Voldemort. Among the new recruits is a colorful young witch named Nymphadora Tonks, who is paired with Lupin for her first official mission, and the two hit it off immediately.
Don't Call Me Nymphadora by Hinotima24.
Summary: You-know-who wants Nymphadora to be part of his army and Dumbledore decides to allow nature to take its course. Nymphadora, the vivacious witch, decides to take on this 'challenge'. Along the way, she loses more than she expects to. No mary-sue. AU. RL/NT
'42 Jobs' - The life and times of Remus Lupin by closetwriter.
Summary: âFor the first time it dawned upon Harry that everyone including himself knew very little about Lupinâs life. He was more than just his fatherâs old friend, more than a ânice guyâ and âgood teacherâ. He seemed like someone who had had an interesting life, a total badass- even if he didnât talk about that life very often.â
Jinxed Hearts by Emcnary.
Summary: Nymphadora Tonks answered the call to join The Order of the Phoenix, not knowing what exactly was to come. Fighting for a world she holds dear, she is facing dangerous missions, balancing Order duty with her job, an unlikely friendship, and a chance for love. OOtP era RLNT love story.
Raise Your Lantern High by starfishstar.
Summary: In which Remus and Tonks fight battles, arrest criminals, befriend werewolves, overcome inner demons and, despite it all, find themselves a happy ending. A love story, and a story of the Order years. (My Remus/Tonks epic, years in the making! This is the second half of the story, set in the Half-Blood Prince year.)
Both sides of the rose by galindaby.
Summary: The whole story of Remus Lupin and Nymphadora Tonks - from the first meeting to their last day.
The Pink and Silver Lining by Kaleidoskye.
Summary: "Happiness can be found even in the darkest of times, if one only remembers to turn on the light". In the darkest war of all time, a little light and colour still endures. Through laughter, through friendship, and through the love of two people who never expected to find each other at all.
Unforgettable by enochian.gnocchi.
Summary: The unforgettable tale of Remus Lupin and Nymphadora Tonks: Part 1 of the most incredible love story ever told. Cannon Fic: Travels through Books 5 & 6 in the Harry Potter series. Rated M for mild sexual content/ adult situations
Through the Storm by tabbycat.
Summary: Remus Lupin is a werewolf, and werewolves canât be trusted to fall in love. Heâs always believed that. As the Second Wizarding War begins to play out around him, he begins to have feelings for a clever, funny and talented Auror. And she has feelings for him too. Follow Remus through the gathering storm of war as he tries to piece together a life for himself despite the dangers around him, the death of his last best friend, and the effects of being in love for the very first time.
Human by cellorocksmyworld.
Summary: Nymphadora Tonks takes a chance and asks the pariah of the wizarding world - Remus Lupin - out for a drink. The chaos that ensues will test her bravery, her ability to Apparate whilst drunk, and her perception of those who must live in the grey areas between black and white. AU
Waiting for the Moon by Kerichi.
Summary: Giant spiders, malevolent bats, wizard scoutsâŚwerewolves. Tonks finds life in Hogsmeade far from simple, while Remus discovers having a partner in touch with her inner wolf complicates his mission and his heart.
A Tale of Two Smiles by miniandminie.
Summary: Join Remus Lupin and Nymphadora Tonks on this rollercoaster ride as they discover each other through the most unexpected circumstances, and, more importantly, teach each other how to love. AU, OoTP, RLNT, Remadora.