One possible fanfiction could be about Sakura joining an Anbu team that has Itachi and Shisui. Maybe Sakura is a new recruit and she has to learn from the two experienced shinobi. Itachi could be the calm and collected leader, while Shisui is the more easy - going one who helps Sakura adjust to the harsh Anbu lifestyle.
In the fanfiction, there could be a conflict within the team. Maybe there is a misunderstanding between Itachi and Shisui regarding a mission strategy. Sakura, being the mediator, tries to resolve the issue. She uses her understanding of both of them to bring them back together. This not only strengthens the bond within the team but also makes them more effective in future missions.
Shisui is known for his cheerful and friendly nature. He would likely be the one to break the ice with Sakura and make her feel welcome in the Anbu team. Itachi, on the other hand, is more reserved. He would respect Sakura's skills but might not be as openly friendly at first. Sakura, being strong - willed, would earn their respect over time with her determination and medical knowledge.
Another one is 'Itachi and Shisui: The Untold Tales'. This story weaves in some unique scenarios that might not have been explored in the original series. It shows their interactions with other characters from a different perspective, highlighting their strong bond.
One idea could be that Sakura, while on a mission with the Anbu team led by Itachi and Shisui, discovers a hidden jutsu that could change the balance of power in the ninja world. The Anbu team then has to protect her as she tries to master it and keep it from falling into the wrong hands.
Another theme is sacrifice. Given their fates in the original Naruto story, fanfictions often play with the idea of how much they were willing to sacrifice for their village, their clan, and for each other. For example, Shisui's sacrifice and how it affected Itachi.
One idea could be a story where Sakura, as a skilled medic, is tasked with treating Itachi and Shisui during a difficult mission. She discovers their complex pasts and bonds with them over time, leading to new alliances and friendships.
Well, you could go for something like 'Itachi and Shisui: A Lemon - Infused Adventure'. This title gives the idea that there's something unique and perhaps a bit zesty about their relationship in the fanfiction. Another option could be 'Lemon - Hued Memories of Itachi and Shisui', which implies that the story might be filled with memories that have a certain flavor, like the sour - sweet taste of a lemon. And also, 'Itachi, Shisui and the Lemon - Scented Plot' could work, suggesting that the plot has an element related to this lemon concept.
Sakura's amusement could actually make Shisui more likely to continue annoying Itachi. Since she finds it funny, Shisui might see it as a sign that his actions are acceptable and entertaining. This could potentially strain the relationship between Shisui and Itachi further if Itachi doesn't like being the target of Shisui's annoyance.
There are quite a few good writers out there. One way to find them is to search for fanfiction communities dedicated to Naruto (since these characters are from Naruto). In these communities, people often recommend their favorite writers. Some writers are known for their in - depth characterizations of Itachi, Sakura and Shisui. They make the characters feel real and add new dimensions to their relationships. You might also want to follow some fanfiction blogs on Tumblr that often share and promote great fanfictions about these characters.