One popular 'donnie x leo fanfic' could be 'Brothers in Bond'. It explores their unique relationship within the story's universe. Another one might be 'The Unseen Bond' which delves deep into their emotional connection.
You can find 'donnie x leo fanfic' on some popular fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfics across various fandoms, and you can easily search for the ones related to donnie and leo there.
One common theme is the exploration of their unique bond. Given that they are from different backgrounds, in the fanfic, their relationship often overcomes these differences. Another theme is adventure. They are often depicted going on adventures together, relying on each other's strengths.
There is a 'april x donnie fanfic' that focuses on Donnie creating a special gadget for April. In the process, they have a lot of cute and flirty exchanges that really bring out their relationship. It's a sweet read.
You can try fanfiction.net. It has a large collection of fanfics from various fandoms, and there are likely to be some good 'april x donnie fanfic' there.
One popular 'leo x raph fanfic' could be 'Bond of Brothers'. It delves deep into the relationship between Leo and Raph, showing their growth and how they support each other through various challenges. Another great one is 'The Unspoken Bond'. It focuses on their unspoken understanding and the times when they have to rely on that bond in tough situations. And 'Leo and Raph: A New Chapter' is also good, which explores their relationship in a different setting, like a post - apocalyptic world where they have to work together more closely than ever.
One popular 'donnie x april fanfic' is 'The Bond Between Them'. It focuses on the unique relationship and the adventures they have together. The story delves deep into their characters, showing how Donnie's intelligence and April's courage complement each other. Another great one is 'Donnie and April's Unlikely Alliance' which starts from a situation where they have to work together against a common enemy and slowly their relationship blossoms.
One common theme is the conflict between their two different natures. Shredder is often portrayed as the villain, and Leo as the hero. So, there's a push - pull dynamic of good vs. evil.
There's also 'Calypso's Choice: Leo'. This one is interesting because it focuses more on Calypso's perspective. It shows how she views Leo and their relationship. The descriptions of her feelings are very detailed, and it makes for a great read if you want to understand their relationship from her side.