In this fanfiction, the plot might revolve around the mystery of how April got pregnant in the first place. Since they are from different species, it could be some sort of magical or scientific anomaly. Donnie would be on a quest to understand it while also taking care of April. They could also have to deal with the reactions of the human world if the pregnancy becomes known. There could be a sub - plot where they search for a safe place to raise the baby, away from both human and mutant threats.
One possible plot twist could be that the pregnancy is not what it seems at first. Maybe it's a result of some sort of alien or mutagenic influence that is making April appear pregnant but it's actually something much more dangerous. For example, it could be a parasite that is using her body to incubate its young. Another plot twist could be that Donnie discovers a way to reverse the pregnancy because he realizes that the world they live in is too dangerous for a baby. Or perhaps, the pregnancy reveals a long - hidden connection between April and the Turtles' origin that no one expected.
The kiss could be the start of a beautiful relationship. They could start going on secret dates, like meeting at their favorite rooftop at night. Donnie might write poems or make small gadgets for April as tokens of his love. April could introduce Donnie to new aspects of human culture that he's always been curious about. However, they would also have to be careful not to let their relationship interfere with their duties in protecting the city. There might be times when they have to choose between their personal feelings and the greater good.
Their relationship would likely become more protective. Donnie would be constantly looking out for April and the unborn child. He'd be more cautious about their adventures. April would rely on Donnie more for emotional and physical support. They'd also have deeper conversations about their future and the future of their family.
The other Turtles would probably have a mix of reactions. Leo might be initially concerned about how this would affect their team dynamic and the safety of April and the baby. He would likely try to come up with a plan to protect them. Mikey would be excited and start thinking about all the fun things he could do with the baby, like teaching it to skateboard or play video games. Raph might be a bit more gruff at first, but deep down he would be protective. Splinter would be wise and offer his guidance, seeing it as a new chapter in their family's story.
It could be that they were tricked into thinking they were helping someone. A villain might have convinced them that the 'kidnapped' person was a bad guy who needed to be taken away for interrogation. But as the story unfolds, they realize they've been used and have to find a way to make things right.
One key moment could be the build - up to the kiss. It might involve a lot of stolen glances, and small moments of connection between Donnie and April. For example, when Donnie saves April from a dangerous situation, and they share a moment of intense eye contact. Another key moment could be right after the kiss, when they both realize the significance of what has just happened. There could be a moment of shock or disbelief, followed by a shy smile. Also, a moment where they decide to tell or not tell their friends about their new relationship could be important.
One possible scenario in a TMNT April - kidnapped fanfiction could be that the Foot Clan is behind the kidnapping. They might want to use April as bait to lure the turtles into a trap. The turtles would then have to outwit the Foot Clan's various henchmen and ninjas to reach April. April herself could also show some of her own fighting skills or use her wits to try and escape on her own while waiting for the turtles to arrive.
Well, in this type of fanfiction, the villains who kidnap April can vary. It could be the Foot Clan trying to use her as a bargaining chip against the turtles. Or maybe some new, evil mutant has emerged and sees April as a key to something. The story usually focuses on how the turtles will overcome the obstacles to get her back safely. There are often a lot of action - packed scenes as they battle their way to April.
In this kind of fanfiction, their relationship could also face some strains. The stress of the pregnancy, like financial concerns if they are in a world where that matters, or just the general anxiety about becoming parents, could lead to some arguments. But these arguments would also be a chance for them to understand each other better and grow as a couple. For example, if Donnie is too focused on building a high - tech nursery and neglects April's emotional needs, they would have to work through that and learn to balance their different priorities.
One popular fanfiction might be 'The Unspoken Feelings'. It delves deep into Donnie's inner turmoil about his feelings for April and how that kiss was a turning point. The story builds on the existing relationship dynamics from the TMNT 2012 series. It shows how Donnie's scientific mind tries to rationalize his emotions while April is also dealing with her own complex feelings towards him.