Someone explain the flashbacks please, I don't understand 😭

The ml and the woman of this chapter are brother and sister. The siblings had a good relationship and the ml had ingrained in his mind to protect his family(pack), so i'm guessing something triggered him and he ended up killing his brother??/friend?? by accident that's why the blondie is scared and i'm guessing because of this, his family elders understood that he has the supervisors' qualities. Since he killed the other puppy friend??/sibling??, the other litter puppies are on bad terms with him and since he basically became medieval police, their relationship became even worse. As i remember from this point on he received special training and was basically raised as a killing machine.

Spoilers.....

If I'm not mistaken. He was raised in his shift form his entire childhood and when he walked in on that scene (it's the blonde guy and his brother (the wolf)) and the blonde guy said that the ml had been the one to attack the brother (not sure if he forgot what happened or something) and everyone thought ml was feral so the dad sent him away (basically isolated him throughout his adolescent years and his early 20s I think) and trained him to become the supervisor. I think in the novel ml was in the room when it happened and he killed the intruders and that's why they thought him feral because he killed their own kind and no one believed they were traitors/intruders.....

If anybody has a clearer explanation please explain cause I read this a while back and don't remember all the details or if I'm correct about that last part

I already comment it in other post but it's basically it:
ml has a pheromone problem, bc he was forced to grow up in wolf form/his daddy refuse to give him proper medication.
he has pheromones shocks were he became basically a feral wolf and hurt everyone/everything on his path, including himself (remember when the puppy hide under the bed? It was one of those episodes)
he indeed hurt his siblings but didn't know it was him. He dad did it bc he wanted to make him a overseer, HE WAS A CRAZY MOTHERFUCKER
things will get worse when the flashback progress

Thanks guys!