Henry saw the body guards that are blown off by the club swings of the troll. They're using normal spells to knock out the troll and even black magic but the troll became enraged when it's hurt by black magic and attacked them relentlessly.
Henry saw the remaining ones are all building a formation to cast spells again. But the two trolls knocked them both away again. They hit the students off while Henry hesitated to help then he saw Cassandra hugging her thighs on ground trembling with fear looking at the trolls.
Although he hated her but there is still that soft corner for her. He don't want to reveal his powers now, his sharingan is too dangerous to be shown outside, so Without hesitation he activated the obscurus and bombarded the two berserk trolls smashing their clubs and knocking them away and killed them both using the same method as he did with those.
As the fight is completed, Cassandra looked at Henry with her lips trembling. Henry felt weak, and leaned on the wall. He took deep and heavy breaths as blood appeared out of his mouth. He then cursed himself for activating this. This is his first time using this and he suffered a backlash from it.
His body trembled as his eyes blurred. He felt a hand supporting and rubbed his eyes to see Cassandra supporting him. Anger surged through him as he struggled and released her hands on him. He looked at her coldly and walked away staggering.
He supported himself with the wall and moved to the infirmary, he ignored Cassandra who is kept calling his name and wanted to support him. Arriving there he pushed the door with difficulty and dropped himself on a bed there losing consciousness.
He didn't use the obscurus properly it seems. It ruptured few tissues in him and he suppressed his healing factor of sage body so as not to expose this weirdness. If a man is shown to have so much power without weakness he will become a target.
But if the power comes at a cost no one will say anything. But Henry still can't believe he saved Cassandra there. It seems he needs to containhis emotions from now. One moment the soft corner clicked and he is there helping three girls in which one of them is a girl he hates.
Pomfrey arrived and poured some potions into him. Only then he slowly regained his consciousness and released the healing factor suppression. He slowly let it down the work and looked at the girl beside him.
He asked," what are you going to do this time? Show proof that I'm an obscurus and then try to expel me ", the girl lowered her head and asked," I'm sorry ", Henry looked at her and said in a cold tone," too late. I don't have any trust on you or your family. Your father did a great thing teaching me not to trust anyone in this world by spreading the news in diagon Alley that I'm a thief. They refused to even sell anything to me. If it wasn't for professor McGonagall I'll be wearing tattered clothes here by now. Go away, don't disturb me ".
Cassandra opened her mouth to say something but stopped. She turned to him one last time before exiting the room. Henry calmed down himself. Henry meanwhile cursed himself in his mind again and again for helping this girl.
The news is spread that Henry killed all the trolls and is in infirmary now. Cassandra's guards as ungrateful as they're ever spread rumours of seeing Henry using the obscurus there. Henry heard this laughed to himself, what is he thinking helping this girl? She proved to be same as her father.
Cassandra reprimanded all her men and don't know how to face Henry now. She once did this for revenge but she started doubting that Henry is a thief. She started believe that he will not take advantage of others. Especially after hearing his words in the infirmary, she is shaken. If Henry is really not a thief then she really did something unforgivable for past few weeks.
After Henry recovered and came back ravenclaw became even more distant fearing they might get hurt when Henry lose control. Henry sighed and silently ate his food while Rose Potter and Hermione Granger approached him.