In a more complex plotline, there could be a misunderstanding. Harry might be trying to protect Draco from something, but Draco misinterprets his actions as Harry trying to undermine him. When Draco finally realizes the truth, he is so overcome with mixed emotions like guilt and relief that he breaks down in tears.
Well, perhaps Sasuke has to leave the village again for some mission or his own personal vendetta. He doesn't explain his reasons fully to Sakura, and she feels abandoned once more, which makes her cry. In a different scenario, Sasuke might be in a battle where he has to make a tough decision that involves sacrificing something that Sakura holds dear. When she realizes what he's done, she's heartbroken and cries. Or it could be that Sasuke is training extremely hard and pushing himself to the limit. Sakura is worried about him, but when she tries to stop him, he dismisses her concerns harshly, reducing her to tears.
One possible plotline could be that it's a moment of unexpected playfulness between Draco and Harry. Maybe they are in a truce situation, and Draco, in a moment of light - heartedness, decides to tickle Harry as a form of friendly teasing. It could be a way to show a new side of their relationship, moving away from their usual rivalry.
One possible plotline could be that in a dangerous magical situation, like a dark wizard attack during a Hogwarts event. Draco, despite his previous animosity towards Harry, has a change of heart. Maybe he overhears some information about the attack being part of a larger plot against Harry specifically. So, Draco steps in and uses his family's knowledge of certain spells or magic artifacts to save Harry. Another could be in a potion - making class gone wrong where Harry is about to be seriously injured by a rogue potion effect, and Draco, who is actually quite good at potions, quickly whips up an antidote or counter - spell to save Harry.
A possible plotline could be that Draco, out of curiosity, starts to research Harry Potter's mother. As he delves deeper, he finds out about her selfless love and her powerful magic. This makes him question his own values and beliefs, leading to a transformation in his character.
Well, perhaps Katara blames Zuko for something that went wrong in their attempts to bring peace to the world. She might think he made a decision that cost them dearly. Her disappointment and anger could be so intense that she lashes out at him verbally. Zuko, who has been trying hard to redeem himself, is deeply hurt by her accusations and starts to cry. It could also be that Katara misunderstands Zuko's intentions in a situation. Say he was trying to protect her but it looked like he was being controlling, and when she confronts him about it, he can't handle the thought of her seeing him in such a negative light and cries.
In some fanfictions, it could be a case of a powerful curse that forces Harry to act against his will. The curse might be placed on him by a powerful dark wizard who wants to create chaos in the wizarding world. Draco is just an unfortunate victim of this curse as Harry, unable to control himself, kills Draco. This then sets off a chain of events where Harry has to deal with the guilt and the consequences of his actions.
Maybe Draco says some really mean and hurtful words to Harry. For example, he might make fun of Harry's family situation, like his parents' death or his relationship with the Dursleys. Words like that can be really cutting and could easily make Harry cry.
One possible plotline could be that Harry sacrifices himself to defeat a new and powerful dark wizard. In this scenario, his friends are left to pick up the pieces and continue the fight against the remaining dark forces. Another plotline might involve Harry being poisoned by a mysterious and undetectable substance, leading to his slow and tragic death while his friends search desperately for a cure.
One possible plotline could be that Harry betrays Draco in a duel. Maybe there was some sort of misunderstanding or a secret deal that Harry made with someone else that required him to turn on Draco during the duel. For example, if there was a dark wizard threatening Harry's friends and the only way to save them was to sacrifice Draco in the duel by using a forbidden spell against him.
One possible plotline could be that they discover they are brothers early on in their Hogwarts years. This would cause a huge stir among the students and teachers. They might initially struggle to accept it, especially given their past animosity. But as they get to know each other better, they start to form a bond and protect each other from the various threats in the wizarding world.