One possible storyline could be Stiles finally finding the courage to stand up to his dad and seek help from his friends. His friends could then support him through the process of getting away from the abuse and starting to heal.
Maybe it involves Stiles' dad having some sort of mental breakdown that leads to the abuse. And in the fanfiction, Stiles discovers the root cause of his dad's behavior while also dealing with the emotional and physical pain. For example, perhaps his dad has unresolved trauma from his own past that he's projecting onto Stiles.
A storyline could also focus on how Stiles' experiences of being abused by his dad shape his relationships with others. He might be more hesitant to trust people, especially authority figures. But through the course of the story, he meets someone who helps him break down those walls and learn to trust again.
Look to Chapter 13 for the clearest answer. It begins with Sensing that something was off with Jiang Yan, Jiang Yan dismissed the..., keeps building through What on earth do you mean?" Ignoring him once again, Jiang Li shifted her..., and lands on How could this happen..." Lin Manru didn't want to.
The best chapter pointer here is Chapter 35, "Stunning Beauty Shocks the Prosperous Age, Tops the Trending Searches!!!". It opens with Shining Transformation Trip's filming location was set on the distant... and closes on Brother is really hardworking, actually arriving at the same time as the....
The best chapter pointer here is Chapter 17, "Madam, the eldest young master has disappeared again". It opens with Jiang Li glanced at Jiang Shixu, who was tense and anxious behind her, and... and closes on I've been a mother for more than ten years but never tasted anything made....
Chapter 52 is the strongest chapter-level answer because it starts from The village chief and the woman behind him exchanged a glance, "This... and follows through on And at this point, they might as well try a desperate remedy for a....
The best chapter pointer here is Chapter 34, "Official Recording!". It opens with Seeing that the public sentiment wasn't quite right, Su Yinwan felt... and closes on Now that Lili is misunderstood, they start to kick us while we're down."....
The best chapter pointer here is Chapter 14, "She Looks So Cool Dancing with a Gun". It opens with Lin Manru had a rare good night's sleep. and closes on But clearly, Lin Manru was unable to accept that her delicate daughter had....
Chapter 11 is the strongest chapter-level answer because it starts from After a meeting, Shang Shaojing pinched the bridge of his nose, tired, and... and follows through on Miss Qin, please accompany us to the police station to explain this....
A practical answer is Chapter 31, because it turns the idea into a concrete scene. The chapter opens with Before Shen Lan had reached the backyard, she already heard the sounds of..., adds pressure through And judging from the photo, she was also a stunning natural beauty!, and ends on After.
The best chapter pointer here is Chapter 5, "Catching Adultery Personally". It opens with Actually, when Manager Fang saw Jiang Li, he was somewhat surprised. and closes on Recently, he did suspect that his wife was cheating on him, but due to the....
Chapter 16 is the strongest chapter-level answer because it starts from Just as the words fell, Jiang Shixu swiftly cast his eyes downward. and follows through on Jiang Shixu panicked, set down the bowl, and reached forward to grab her....