If Lucius walks in, the power dynamic between Harry and Draco would likely shift. They would no longer be in their own little world and would have to deal with an adult authority figure. Draco might become more submissive to his father's commands, and Harry would have to face the wrath of Lucius, which could put him in a very difficult situation.
Another possibility is that Lucius could be initially confused. He might not understand what he's seeing at first. After all, Harry and Draco are supposed to be enemies in the general wizarding world view. He could stand there for a moment, trying to process what's going on before taking any action.
In this scenario, it could also lead to a major shift in the relationships within the fanfiction. Hermione might feel betrayed if Draco doesn't stand up to his father. And Draco could be forced to make a difficult choice between his family's expectations and his feelings for Hermione. Lucius's interference could also bring in other elements of the wizarding world, like the Ministry or other pure - blood families getting involved depending on how the situation unfolds.
Harry Potter can be an interesting character to pair with them. It creates a lot of conflict and potential for character development. Given their opposing stances in the original story, it can lead to some really intense and thought - provoking scenarios in fanfiction.
In this fanfiction, Harry might also save Draco by appealing to Lucius' sense of self - preservation or family. He could threaten to expose some of Lucius' secrets or illegal activities if he doesn't let Draco go. Or, if there is some underlying family drama involved, Harry could use that to his advantage. For instance, if there's a feud within the Malfoy family that Harry is aware of, he could manipulate the situation in a way that makes Lucius back off and leave Draco unharmed.
Well, this is a rather disturbing and non - canonical concept. However, some niche fanfiction communities might have explored such ideas. It's important to note that such content may not be in line with the general positive and ethical interpretations of the Harry Potter universe. Maybe start by looking in the more 'alternate universe' sections of fanfiction platforms.
They could start by having an honest conversation. Lucius needs to admit his wrongdoings and Draco needs to express his pain. It's a first step towards redemption.
Well, Ron could get angry. He has a strong loyalty to Harry, and seeing Harry with Draco, who he has always seen as an enemy, might make him feel betrayed. He might immediately jump to conclusions and start shouting or demanding an explanation from Harry.
The plot could take a turn towards drama. Ron's reaction could create a rift between him and Harry, forcing Harry to choose between his old friend and this new - found connection with Draco. This would add a lot of tension to the story.
In fanfiction, Lucius beating Draco could be a way to show a complex family dynamic. Maybe Lucius is portrayed as a strict and sometimes cruel father figure. It could also be a plot device to create drama and show Draco's struggle within his family environment.