Perhaps the plot could involve the reader being in some kind of danger or distress, and Hook uses tickling as a way to cheer them up. For example, the reader has had a bad encounter with a villain in Storybrooke, and Hook takes them to a secluded spot by the docks and tickles them to make them laugh and forget their troubles. It could also lead to a deeper emotional connection between them as they share this intimate moment.
The fanfic could be set in a more magical scenario. Maybe there's a spell that makes the reader overly sensitive to touch, and Hook accidentally discovers this and starts tickling them playfully. As they interact, the reader realizes their feelings for Hook are stronger than they thought, and Hook also has a newfound sense of protectiveness and affection for the reader. This could then lead to a romantic adventure where they face challenges together while their relationship grows.
You can try looking on fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. These platforms have a large collection of fanfics, and you might be able to find the Hook x Reader tickle fanfic there by using the search function.
The fanfic could involve the reader getting lost in Neverland and Peter Pan being the one to find and rescue them. As they spend time together, they start to understand each other better. The reader might learn to fly with Peter Pan's help, and they could have deep conversations about freedom and growing up under the starry skies of Neverland. It could be a story of friendship or something more, as they bond over shared experiences and the wonder of Neverland.
A possible plot could be about a lemon that has magical powers. It might live in a world where fruits have their own society. The lemon could go on an adventure to find a special ingredient to save its ill friend in the orchard.
Well, perhaps the fanfiction could focus on Hook's backstory related to the birth. Maybe he had some past experiences that make him extra cautious during Emma's pregnancy. For example, he might have witnessed a difficult birth in his pirate days that scarred him. So when it's Emma's turn, he's constantly on edge. The plot could then revolve around him coming to terms with his fears and being there for Emma as she gives birth.
Well, a plot twist might be that Regina's pregnancy is a false one, created by an illusion spell. This could be part of a larger scheme to make her look vulnerable and draw out her enemies. Or perhaps the baby she's carrying has some sort of special power that she has to protect it from other magical beings who want to use that power for their own gain. Also, it could turn out that the pregnancy is a result of time - travel shenanigans, where she got pregnant in a different time period and now has to deal with the consequences in her current time.
Perhaps 'Once Upon a Time: The Reader in Peter Pan's World'. This title emphasizes the reader's presence in the world of Peter Pan, which can lead to various interesting storylines.
One possible plot could be that August has some important information to share with Emma about her past or the impending danger in Storybrooke. Maybe he stays with her to protect her from the villains who are after her powers. For example, he could know about a new curse that is about to be cast and needs to keep her safe until they can figure out a way to stop it.
A baby fanfiction about Emma and Hook could involve their journey into parenthood. Maybe it would start with the discovery of Emma's pregnancy. They'd have to deal with the joys and fears that come with it. Hook might be overprotective, given his past losses. And they'd face challenges from the magical world they live in, like protecting the baby from dark magic threats.
The lemon itself could be a curious and adventurous character. There could be a magical bird that befriends the lemon and helps it fly to different parts of the orchard. A family of oranges might be in the story too, with a mother orange who is very protective of her orange children and at first is suspicious of the lemon but then realizes it's not a threat. There could also be a sly banana that tries to steal the lemon's ideas for its own gain.
A plot could involve Emma having difficulties with her pregnancy due to her being the Savior and all the magic in her. Hook is overprotective and tries to find ways to ease her pain. Meanwhile, they learn that there are prophecies about their child that lead them on a journey to different realms to protect the baby's future.