Wattpad also has some Remus and Tonks fanfictions. While it may not have as large a selection as the other two, you can still find some unique and interesting takes on their relationship there. You can search for them in the fantasy or Harry Potter sections.
Fanfiction.net is a great place to start. It has a large collection of fanfictions about various characters, including Remus and Tonks. You can search by the characters' names or by tags related to their relationship or the Harry Potter universe in general.
Love against all odds is a very common theme. Given Remus' condition as a werewolf, they face a lot of opposition and prejudice. Fanfictions often explore how their love overcomes these difficulties.
There's also 'Love in the Shadows'. This fanfic focuses on the more secretive aspects of their relationship. It portrays how they communicate in the midst of Voldemort's rising power, with Tonks using her skills as an Auror to protect Remus, and their love growing stronger through shared hardships.
One great piece of fanfiction could be 'The Lupin - Tonks Chronicles' which delves deep into their relationship, exploring how they overcame the challenges of Remus being a werewolf. It beautifully portrays their love and the sacrifices they made for each other.
You can start by looking on fanfiction websites like FanFiction.net or Archive of Our Own (AO3). They have a large collection of fanfictions including those about Remus and Tonks.
One possible scenario in this fanfiction could be that Teddy shows some unique magical abilities that remind Remus and Tonks of their own magical heritages. Maybe Teddy can transform in a way that combines both werewolf and metamorphmagus traits, which would be a really interesting plot point. It could also explore how Remus and Tonks, who had such a tragic end in the original story, get to experience some happy moments with their son Teddy through the magic of fanfiction.
You can start by looking on popular fanfiction websites such as Archive of Our Own (AO3). It has a vast collection of fanfictions from various fandoms, including ones about Remus Tonks. Another option could be Fanfiction.net, although the tagging system there might require a bit more searching to find exactly what you're looking for.
FanFiction.net also has a lot of Lupin and Tonks fanfiction. Just use the search bar and type in their names. You might find some hidden gems there. Some authors are really dedicated to exploring their relationship in unique ways on this platform.
Maybe Remus leaves because he feels unworthy. He has always seen himself as a danger and an outcast. Despite Tonks's love, he can't shake off his self - loathing. So, in the fanfiction, he leaves while Tonks is pregnant, leaving her heartbroken. However, their friends, like the members of the Order of the Phoenix, might try to convince Remus to come back and be a family with Tonks.
Another option is Wattpad. It has a large community of fanfiction writers. Although it's not as well - known for Harry Potter fanfiction as AO3 or Fanfiction.net, it still might have some unique stories about Remus Lupin and Hermione. You can use relevant tags and keywords to narrow down your search.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of Harry Potter fanfictions, and you can easily search for ones related to Tonks and Harry. Fanfiction.net is also a popular option, though the tagging system might be a bit different.