One common theme is definitely grief and how Sakura copes with it. Another could be self - discovery as she has to re - define herself without her parents.
She would be heartbroken. Sakura has known Naruto for a long time, and his death would shatter her world. She may become more withdrawn and serious. In the long run, she could use her pain as motivation to become stronger. Maybe she would train harder than ever before to make sure that no one else has to suffer the way Naruto did. She might also start to see Naruto in a different light, realizing all the things she took for granted when he was alive.
Well, often it might start with Sakura in a state of grief. Maybe she'll have to learn to be independent very quickly. For example, she could start taking care of the family business or property left behind. And there might be some flashbacks to the good times with her parents, which would add more depth to her sadness.
You might find comics where Sasuke and Sakura have a comical misunderstanding or a funny competition. Like when they both try to cook and end up making a huge mess!
Maybe the story is that Sakura accidentally gets involved in an Akatsuki mission. She tries to play along to avoid trouble and ends up making the whole situation really comical. Like she uses her medical skills in really strange and unexpected ways during their heist, causing the Akatsuki members to be both confused and amused.
One characteristic is that it creates unexpected situations for Sakura. For instance, she might find herself in a situation where she has to use her medical ninjutsu to cure a talking tree that has a cold. Also, good fanfiction in this regard has a fast - paced and light - hearted plot. There are no long - drawn - out serious moments. Instead, it's filled with quick - witted dialogues. Like when Sakura is arguing with a genin over the last piece of dango and they exchange really funny insults. Moreover, the use of visual humor can be great, like Sakura's hair getting stuck in a tree branch while she's chasing a runaway pig.
The contrast between Sakura's strong - willed and often comical personality and the dark, mysterious nature of the Akatsuki members can lead to some really funny situations. For example, if Sakura tries to boss around an Akatsuki member like Deidara, who has his own explosive temper, it could result in some hilarious banter.
Sakura for sure. And then it might be Deidara. His love for art and his explosive personality would be really funny when paired with Sakura. Also, Sasori could be in it. His puppet - like self and Sakura's medical knowledge could lead to some really strange and humorous interactions. For example, Sakura might mistake Sasori's puppet parts for real injuries and try to 'heal' them.