Perhaps some students who are jealous of Harry's fame could be antagonists. They might try to undermine him during training exercises.
Another possibility is that there are dark forces outside the military school that see Harry as a target. They might try to infiltrate the school to get to him. And some of the students or staff who are secretly in league with these dark forces could be the main antagonists, creating all sorts of problems for Harry as he tries to adapt to his new military - magic education.
The best chapter pointer here is Chapter 58, "Jiang Yan Stranded Abroad". It opens with Facing Jiang Yan's triple barrage of questions, Jiang Li's only response... and closes on By ten o'clock, Jiang Yan was still wandering outside..
Chapter 67 is the strongest chapter-level answer because it starts from I'm pissed," Jiang Yan cursed again, "These people are too much, aren't... and follows through on Accompanied by the wisps of smoke gradually rising from the stove behind....
If you want the clearest chapter reference, go to Chapter 65. Early on, Several minutes later, the room remained silent.; later, the chapter leans on The cameraman then discovered that Jiang Li's door wasn't properly shut,....
Look to Chapter 63 for the clearest answer. It begins with During those seven days, he thought he had completely escaped from that..., keeps building through But now it seemed he hadn't., and lands on It was already past midnight, but the conference room at Xingmei....
The best chapter pointer here is Chapter 93, "Why Consult a Fortune Teller When a Child is Lost?". It opens with Jiang Li looked back and saw several aunties linking arms, walking up the... and closes on I did the same when I was young, and when my dad found me, I got a beating....
If you want the clearest chapter reference, go to Chapter 123. Early on, After He Yun also carefully rolled up her trouser legs and walked down...; later, the chapter leans on [Jiang Li, why are you still wandering around the edge?.
The best chapter pointer here is Chapter 107, "Are You Really Going to Participate in That Variety Show?". It opens with On the plane, when He Yun had taken off his mask and greeted her... and closes on Although Su Yinwan's recent change in temperament had been hard for her to....
Look to Chapter 101 for the clearest answer. It begins with Jiang Li walked over to the slope where the two had fallen down., keeps building through Below the small hill was nothing other than a large patch of sludge., and lands on If you encounter any trouble in the future, you can come to me..
If you want the clearest chapter reference, go to Chapter 89. Early on, Director Sun took a step back, "What's the rush?; later, the chapter leans on It's true about the go-kart costing one point, but this time we're using....
A practical answer is Chapter 109, because it turns the idea into a concrete scene. The chapter opens with And another thing," Jiang Li said, taking out a tissue to wipe her lips,..., adds pressure through Get them to find him, no matter the cost, I want to ensure Jiang Yan can't..., and ends on.