One plot could be that a powerful enemy is targeting both Kankuro and Sakura because of their unique skills. They are forced to hide together in a remote location. While in hiding, they share their life stories, dreams and fears. This time together makes them understand each other better and they develop a strong camaraderie.
Maybe there's a plot where Kankuro and Sakura are both chosen to participate in a special ninja tournament. They train together before the tournament, learning from each other's techniques. During the tournament, they support each other and their friendship blossoms as they progress through the various rounds.
One idea could be that Sakura uses her medical ninjutsu to heal Kankuro after he gets seriously injured in a battle against a powerful enemy. She has to overcome various challenges like limited supplies and the unique nature of Kankuro's puppet - related injuries.
A plot twist could be that the method Sakura uses to heal Kankuro has an unexpected side effect. For example, it gives him a temporary boost in his puppet - using abilities that he has to quickly learn to control.
A possible fanfiction could be set in a post - war scenario. Kankuro and Sakura are part of a group that is trying to rebuild relations between their respective villages. They often have debates on how to best achieve this. Along the way, they also discover that they have more in common than they thought, which leads to a deeper connection between them.
One great piece of Sakura Kankuro fanfiction might be 'The Unlikely Bond'. It focuses on their friendship development in an AU (alternate universe) where they are both on a mission together. They start off not getting along but gradually learn to respect and rely on each other.
One common theme is friendship. Writers often explore how these two characters from different villages can become friends. For example, they might start off as rivals but then find common ground in their love for their respective villages and the shinobi way.
One possible story could be about Kankuro and Sakura teaming up on a mission. In the fanfiction, they start off as just comrades but gradually develop a deeper understanding and friendship. This friendship might then be the base for some interesting character - growth arcs for both of them, like Sakura teaching Kankuro some medical ninjutsu basics in return for him showing her some of his puppet - making secrets.
You can start by looking on some popular fanfiction websites like FanFiction.net or Archive of Our Own. They have a large collection of Naruto - related fanfictions, and you might be able to find some that feature Kankuro and Sakura. Just use the search function on the site and type in 'Kankuro and Sakura' to narrow down the results.
Another interesting plot is when they are chosen to represent the village in an international ninja event. They have to train hard and deal with the pressure. This plot shows their determination and how they support each other through the tough training regime and the challenges during the event.
Kankuro could use his puppet - making skills to his advantage. He could create puppets that are resistant to the elements in the One Piece world, like water - proof puppets since there are a lot of sea - related challenges there. Also, he could make puppets that can fly to deal with the various islands and different terrains.
There are several great 'Kankuro x Reader' non - lemon fanfictions out there. You can start by looking on platforms like Archive of Our Own (AO3). Search for the 'Kankuro x Reader' tag and then filter out the ones marked as 'lemon' or 'adult - rated'. Some fanfictions might focus on their adventures together in the Naruto universe, like them going on a mission or Kankuro teaching the reader some of his puppet - related skills.