It could be a rogue ninja who has a grudge against their village. This ninja might target Chocho and Karui because they are seen as rising stars in the village. The rogue ninja could try to disrupt their training or missions, causing trouble for them and testing their friendship.
I'm not sure specifically as I haven't read that particular fanfic. But generally, it might explore how Chocho from the Boruto series is dealing with an eating disorder. It could be about her struggles, how her friends and family react, or her journey towards recovery.
Perhaps in the fanfic, Chocho is trying to improve her skills and Karui becomes her somewhat reluctant mentor. Karui is tough on Chocho at first but then realizes Chocho's determination. As they train together, they start to respect each other more and more. This could lead to them becoming closer friends and even sharing secrets about their dreams and fears.
You could try looking on popular fanfic websites such as Archive of Our Own (AO3) or FanFiction.net. These platforms often have a wide variety of fan - created content, including fanfics related to the Boruto series.
Sarada might be initially shocked and sad. She loves both her parents, and the divorce would be a huge blow to her. She could become withdrawn for a while, not wanting to talk to her friends about it.
Itachi would probably be very calm and composed. He might see Sarada as a symbol of the new generation of ninjas in the village. He could be gentle with her, perhaps sensing her potential and her desire to grow as a ninja.
There's also a chance she meets her own ancestors. This would be a very emotional and educational encounter for her. She could learn about her family's past in a more direct way and maybe discover some long - lost family secrets.
Sarada's relationships would change. If she meets her ancestors or younger versions of people she knows, she'd have to navigate new dynamics. For example, if she meets a young Sakura, she might initially be in awe but then realize that her mother was also a normal ninja once. This would make her respect Sakura even more and also change how she views herself as part of their family legacy.