Let me explain this scene. This is from my TIH au. Basically. This takes place years after the invasion when Donnie and Leo were 17. They're 21 in this situation.
Leo and Donnie were having a fight. Yelling at each other in Donnie's lab, neither of them remembered how it started but were determined to win. It escalated severely, it started about something simple but turned into them yelling at each about everything they think the other is doing wrong.
Leo was yelling about how Donnie had been so distant, snapping at the slightest error on missions. Donnie had been silent for a good five minutes. Leo thought he was understanding what Leo was saying.
When Donnie looked up. His eyes were full of hatred, pure hatred. Leo was confused but he could feel slight dread crawling up his spine. As if his body was trying to tell him something was off.
"Dee?" Leo asked. Backing up unintentionally.
'Donnie' stayed silent. Backing Leo into a wall. Leo knew something was off, even when Donnie was mad at him. He didn't act like this. Was this not Donnie? Leo was confused and worried, a little scared.
"Donnie, why are you acting odd?" Leo asked. His shell is pressing into the wall now.
Then, 'Donnie' lunged. Picking Leo up by the throat with his hands, strangling him. Leo was fully panicking now, asking 'Donnie' what he was doing and what was going on. The more he spoke though, the harder and tighter 'Donnie's' grip got. His claws were slightly embedded into Leo's skin now. A little blood trickling down Leo's neck.
"Donnie! Stop! You're hurting me!" Leo screamed. It was getting hard to breathe. Then he was dropped into the floor as he gasped for air. He looked up to see Donnie pressing his hands to his head, like his head hurt. When Donnie looked up, he was greeted by Leo looking terrified and his neck injured.
Donnie looked horrified. He crouched down to Leo saying he was sorry and he didn't know what came over him. Donnie was crying as he was talking to Leo.
Leo didn't fully understand what just happened but he knew, that the person who attacked wasn't his brother but someone else. Though, his brother was back. His mind raced, was Donnie possessed? Was it something else?
Leo never told anyone that the incident happened, lied to the others about why his neck was bruised and bloody like he had been strangled. But he was worried, what was going on with his twin?


















