Yes, there is. You can find some on various fanfiction websites. Just search for 'tmnt raphael and april love fanfiction' and you'll likely come across several stories.
I'm not aware of any 'abused' fanfictions in a positive or promoting way as abuse is a serious and negative topic. Fanfictions should generally focus on positive, creative and healthy storylines rather than such disturbing themes. However, if there are some that deal with this in a way to show how to overcome abuse or something similar, they would be hard to single out without extensive searching through the TMNT fanfiction community.
One common theme is the struggle with their different natures. Raphael being a mutant turtle and April being human. Another could be the protection aspect, where Raphael is always ready to protect April.
One reason could be to create a contrast. Raphael is often seen as a tough and strong character. By writing about him being abused, the writer might be aiming to show his vulnerability and how he overcomes it. Maybe they want to explore the idea of how trauma can shape a character and how he can still be a hero despite it. However, it's important to note that this is a rather heavy and potentially disturbing topic to write about.
One common theme is the 'opposites attract' idea. Raphael is often portrayed as a tough and sometimes hot - headed character. So, when paired with the reader, there can be a dynamic where the reader's more calm or gentle nature complements his. For example, in some stories, the reader might be able to soothe Raphael when he's angry.
Another possible main character could be a character with a mysterious origin. This character's past might be gradually revealed throughout the story, adding an element of intrigue. He or she could have powers that are initially hard to understand or control, which creates internal conflict as well as external challenges when dealing with the enemies in the graphic novel.
The ultimates graphic novel may also stand out in terms of its use of color. The color palette could be carefully chosen to set the mood. For instance, darker tones might be used in more serious or menacing scenes, while brighter colors could represent hope or heroic moments. It might also have a distinct narrative structure, perhaps using flashbacks or multiple storylines that converge in an interesting way.
Since it's a fanfic, it's difficult to say exactly what it's about without reading it. However, 'ultimates hela' gives the idea that it's centered around a particular interpretation of Hela. The '1610' might be a specific numbering within a series or a reference to a particular setting. The 'x oc' indicates that there is an original character involved. It could be a story of how this original character interacts with Hela in the 'ultimates' context, perhaps they become allies or enemies, or they go through some sort of transformation together.
I'm not entirely sure as the title is rather unclear. It could potentially be a fanfic about a character named Hela with some kind of ultimate form, and perhaps the '3610x oc' might refer to an overclocked (oc) setting related to a system or device within the context of the fanfic. But without reading it, it's just speculation.