One possible plotline could be Sakura using her medical skills in a new way in the ANBU. For example, she might develop new medical jutsu to heal ANBU members during dangerous missions more effectively.
A third plotline could involve Sakura being sent on a special mission by the ANBU. She has to team up with some other ANBU members she doesn't really know well. During the mission, they encounter unexpected enemies and challenges. Sakura has to use her wits and her ninja skills to get them out of trouble. Along the way, she also learns more about the ANBU's true purpose and her place within it.
One possible plotline could be that Kakashi is assigned to train Sakura within the ANBU. He could teach her some of his signature jutsu and survival skills. Sakura, being a quick learner, starts to adapt to the ANBU's harsh and secretive environment. They might be sent on a mission together where they have to infiltrate an enemy base. Sakura uses her medical ninjutsu to heal Kakashi when he gets injured during the infiltration, and together they manage to complete the mission successfully.
In this fanfiction scenario, Sakura might gain a whole new level of combat skills. She could learn stealth techniques from Anbu Kakashi. This would make her a more formidable ninja in the story. Maybe she would also be involved in some top - secret missions and form a closer bond with Kakashi during those dangerous operations.
In some fanfictions, Naruto might join Anbu because of Sakura to prove himself worthy of her. Maybe he thinks that by becoming an elite Anbu member, he can show her that he's strong and reliable.
One interesting plotline could be Naruto and Sakura being assigned a top - secret mission in the ANBU. They have to infiltrate an enemy organization together. Along the way, they discover new powers within themselves and also deepen their bond as comrades. Maybe Naruto unlocks a new form of his chakra while Sakura refines her medical ninjutsu to be used in combat situations in a more deadly way.
Well, you can try looking on some popular fanfiction websites like FanFiction.net or Archive of Our Own. Just search for 'sakura joins anbu' there, and you'll likely find a variety of stories.
Sakura would probably grow in her combat abilities and strategic thinking. Being in the Anbu with Kakashi means she'd be exposed to high - level missions. This would force her to think on her feet and make split - second decisions. Also, she could develop a new sense of loyalty and camaraderie with her Anbu comrades, which would be different from her relationships in the regular ninja teams.
Perhaps in a 'sakura is innocent fanfiction', there could be a plot where Sakura is in a new, unfamiliar world or situation. People there initially misjudge her actions as being malicious, but as the story unfolds, it becomes clear that she was just acting out of pure intentions and is truly innocent. For example, if she's in a magical realm where her normal, helpful actions are misconstrued as dark magic. The story could then focus on her journey to clear her name and show that she's just an innocent girl trying to do good.
Another plotline could involve Percy making new friends in the navy. These friendships could be tested during dangerous missions or when faced with internal conflicts within the naval unit.
A plotline could involve Tony Stark joining Hydra to spy on them for the Avengers. He pretends to be on their side, but secretly feeds information back to his old team. Along the way, he has to be careful not to get caught and also has to deal with Hydra members who start to suspect him. This would create a lot of suspense and action in the fanfiction. Also, there could be a plot where Tony tries to change Hydra's ideology from within, using his charm and intelligence, but it turns out to be a much harder task than he thought.
Another plot could involve Irene using her unique powers to help Fairy Tail in a big crisis. Maybe there's a powerful enemy threatening the guild and her abilities are crucial in the fight. For example, she could use her magic to turn the tide in a battle against a dark guild.