There might be a fanfic where Sakura discovers a hidden area in Konoha filled with sakura trees that have magical sakura leaves. These leaves give her special powers, but she has to keep it a secret. It could be a really exciting fanfic with elements of mystery and adventure. You can look for such concepts on different fanfic websites.
I'm not sure about a specific one off the top of my head, but you can try searching on fanfic platforms like Archive of Our Own. Just type in 'Sakura leaves Konoha' and you'll likely find some great ones.
One possible 'sakura is not from konoha fanfic' could be 'Sakura's Alternate Origins' where she hails from a hidden village far away. It explores how her different upbringing changes her character and her relationships within the Naruto universe.
Sasuke might initially be shocked. He has always seen Sakura as someone connected to Konoha, so her leaving would be unexpected. He could be concerned about her safety, especially if she leaves without proper preparation or protection.
One interesting Sakura leaves Konoha fanfic could be about Sakura using the symbol of sakura leaves in a new jutsu she develops in Konoha. It might show her growth as a ninja.
She might be shocked at first. Sakura has always known Naruto as someone who is very attached to Konoha. If his leaving is because of her, she could feel guilty. She might try to stop him, asking him why he's doing this and telling him that he doesn't have to go.
I'm not sure about specific 'sakura saves konoha fanfiction' titles off the top of my head. But you can try searching on popular fanfiction websites like FanFiction.net or Archive of Our Own. Use the keywords 'sakura saves konoha' and you should be able to find some interesting reads.
For Naruto, it would be a big shock. He's always seen Sakura as an important part of the team. He would probably feel guilty, thinking he might have done something wrong. Sasuke might be more reserved in his reaction, but deep down, he would also feel the loss. Kakashi would be worried about her safety. The other ninja in Konoha might start to question the unity of the village if someone like Sakura, who was so well - known, left. And the young ninja who looked up to Sakura would be disappointed and might even lose some motivation in their training.
Naruto would be devastated. He has always considered Sakura as a dear friend and teammate. He would probably try to convince her to come back at first. If that fails, he might see it as his mission to bring her back by force if necessary, believing that she has been led astray. Sasuke, on the other hand, might have a more complex reaction. He has his own issues with Konoha, so he might understand Sakura's desire to leave on some level, but he would also be suspicious of her motives for joining Akatsuki.
One possibility is that Sakura leaves Konoha to seek stronger medical ninjutsu training elsewhere. Maybe she's heard of a hidden village with advanced medical techniques and decides to leave her home to master them. This could lead to her facing new challenges, making new friends, and coming back to Konoha as an even more powerful and knowledgeable medical ninja.
One possible plotline could be that Sakura leaves Konoha due to a personal quest for self - discovery. She might feel that she has outgrown the village or that there are things she can't achieve while staying there. For example, she could be in search of a new medical ninjutsu technique that can only be found in a far - off land. Along the way, Sasuke might cross her path, and they could either have a moment of reconciliation or further conflict depending on their respective states of mind.
One idea could be that Sakura leaves Konoha to study a rare form of medical ninjutsu in a far - off land. During her journey, she discovers a new type of chakra that has the potential to revolutionize the medical field in Konoha. Another plot could be that she leaves because of a misunderstanding with her friends in Konoha, and while away, she has to fight against a group of rogue ninjas who are after a powerful artifact she accidentally comes across. A third plot might be that Sakura leaves to find a cure for a strange illness that has started to affect the ninja in Konoha, and her travels take her to places she never imagined and she meets old enemies who become unlikely allies in her quest.