Obviously, Lucius could be the main antagonist here as he is the one starving Draco. His actions are harmful to Draco and go against basic care for a family member.
It could also be the case that there is a greater force controlling Lucius. So, that unseen dark power or entity could be the real main antagonist. Lucius is just a tool in its hands, while Draco is the victim of this whole situation. The fanfiction could then focus on Draco not only fighting against his father but also trying to uncover and defeat this hidden force.
Another idea is that Lucius is not truly the antagonist in his own mind. He may think he is doing what's best for Draco, but his actions are still antagonist - like. So, it could be Lucius's warped ideology that serves as the main antagonist. Draco has to break free from this wrong way of thinking his father has and find his own path in the wizarding world.
One possibility is that Lucius is trying to prepare Draco for a dangerous task in the wizarding world. He believes that by starving Draco, he can make him more resilient and focused. However, this extreme method backfires as Draco starts to lose his health and his magical abilities start to wane. His friends notice the change and try to intervene, leading to a conflict between Lucius and those who want to protect Draco.
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.
Obviously, Draco and Lucius are the main characters. Draco is often depicted as a young wizard struggling with his family's expectations, and Lucius as a more powerful and domineering figure in the Malfoy family.
Obviously, Lucius and Draco are the main characters. Lucius, with his strong - willed and often cold nature, is the instigator. Draco, a young wizard trying to find his place in the dark - leaning Malfoy family, is the victim of his father's actions that lead to his crying. Their relationship is central to the fanfiction.
Draco could be seen as the main antagonist. Since the title implies that Harry breaks his face, it's likely that Draco did something to provoke Harry in the first place. Maybe he was bullying Harry's friends or being his usual snobbish self towards Harry.
The main antagonist could be a group of dark wizards who are trying to revive an ancient and powerful dark magic. They believe that Draco has some information about it because of his family's past associations. So they chain him up to force him to talk. This group could be led by a mysterious figure who has a personal vendetta against the Malfoy family.
Perhaps Kaguya Otsutsuki is resurrected again, but this time with a stronger will and more dangerous plans. Since Naruto was the one who played a major role in defeating her before, she targets him first in this fanfiction.
Another possibility is that a new original character could be the main character. This character could be a house - elf who is in charge of cleaning the bathrooms and has some interesting interactions with Draco while he's in the shower.
His father, Lucius Malfoy, might also be a main character. Lucius, who is always so concerned about appearances and family reputation, would be horrified by Draco's slobbishness. There could be a lot of conflict between them as Lucius tries to force Draco to be presentable again. And then there's Hermione Granger. Since she's always so neat and organized, she might be appalled by Draco's slobbish ways and get involved in some sort of rivalry or strange friendship with him because of it.
Sirius might see Draco as just a young boy being influenced by a bad father. He could have a sense of wanting to protect the innocent, regardless of which side they seem to be on. So he steps in to save Draco from Lucius' potentially harmful actions.