Well, you could try to remind yourself that it's the writer's job to evoke emotions, but it doesn't mean you have to let it affect you too much. Engaging in some physical activity or hobbies can also distract you and help you get over the crying.
It's popular because their relationship is complex. Sakura has had a long - standing connection with Naruto. Their friendship has had its ups and downs, and fans like to explore the emotional depth of Sakura's feelings for Naruto through her crying. It adds drama.
Sakura might cry over Sasuke because of the distance between them. In many fanfictions, Sasuke goes off on his own journey, leaving Sakura behind. She misses him and the pain of separation makes her cry. Additionally, if Sasuke gets injured severely in a fight, Sakura, being a medic, might cry out of worry for his well - being and the possibility of losing him.
I'm not sure of a specific title, but in general, you can look for fanfiction on websites like FanFiction.net or Archive of Our Own. Just search for 'Sakura crying over Sasuke' in the search bar. You might find a lot of different stories with different takes on this concept. Some might be more angsty, while others could have a more hopeful tone where she finally gets through to him.
Gon in fanfiction can be very single - minded in his pursuit of goals, just like in the original. He might be a bit more naive at times, which can lead to interesting plot twists. Killua is often portrayed as having a complex emotional side. He struggles with his past as an assassin and his loyalty to Gon. His cool exterior may crack in some fanfictions, showing his true feelings.
Help her block or unfollow the source of the distressing tweet. If it's a case of online bullying, report the tweet to the relevant authorities on the platform. Also, encourage her to talk about her feelings. Maybe she can write her own response tweet to set the record straight if it's about false rumors. Another good idea is to distract her from the tweet by doing something she likes, such as watching a funny movie or going for a walk in the park.
Gon would probably be angry at first. He has a strong sense of justice and being kidnapped against his will would surely make him mad. He'd try to fight back immediately if he had the chance.