You were aware that Five's obsessive and irritable behavior had changed. He was more grumpy, meaner than ever. Whatever had happened since he had jumped into the future had changed him. Everyone was aware of his change, especially in his approach to you and to Viktor. He wasn't even trying to hide it. He was more caring to you while treating everyone else with indifference and contempt, and Viktor's interest in you in particular angered him very, very much. He always wanted you by his side. He convinced everyone that you should stay with him while he bossed them around. You had to stand next to him or the world would be destroyed. But more like his world.
They all knew that you were a pretty naive person. Your approach to life was much more innocent, much more friendly. Something that caught Five's attention quite a bit. He kept saying he had to protect you. He was very strict about not leaving your side and going crazy when he didn't know what you were doing. He wanted to control everyone, but you the most, and your being submissive only made his job much easier. Viktor was fed up with this. He grabbed you by the arm, pulled you behind him, and took a step forward, challenging Five. "She's not your pet."
Five didn't tell anyone what was going on in the future, and no one could figure out why he suddenly showed a clear interest in you. They knew he had a tacit interest in you before, a covered and secret interest. They could tell from his behaviour and words he chose. They, especially Klaus, wanted to tease him about it but then gave up, anticipating Five's aggressive reaction. But now Five didn't try to hide anything. He was visibly hostile to Viktor and tried to possess you. Whenever they asked him questions, he pushed them back with insults.
He certainly didn't take it well when Viktor tried to take you away from him. He jumped behind Viktor, pulling you back and pushing him. But this was no ordinary push, he smashed him into the wall. Then he jumped right in front of Viktor and punched, causing his eyes to turn white. With an energy emanating from his body, he pushed Five backwards and soared into the air. "What the hell is wrong with you?"
"Stay away from her. Or I swear, I will kill you." Five wrapped his arms around you and gave everyone a threatening look. When Diego tried to approach to calm him down, he yelled at him to back off. Viktor couldn't even express his anger. Five's behavior confused him a lot.
"Why are you so interested in her all of a sudden? What's so special about her?" He stepped on the floor and got closer to him, eyes still glowing, but Five walked back and pulled you behind him. He didn't wanted Viktor to get any closer to you. He hissed between his teeth. "She was always so special to me."
"Then why didn't you talk to her? You don't talk to her and attack when someone tries to. What technique is this?" His eyes returned to normal and a small smile appeared on his face. "What did you see in the future?"
Five's grip tightened and it hurt you. He was so angry, or had very different emotions. Maybe both. "None of your business!"
"You saw me and her. Together. Right? That's why you're so..." He leaned and whispered, "scared." He looked at you and winked. His smile was confident and seemed to want to give you comfort because you looked so small and scared behind possessive Five.
Five pulled you to his chest and leaned your head, blocking your view. "It is you who should be scared because I'm ready to do anything to get what I want."
Five coming back to an empty house, and knowing his siblings were responsible
AO3
Warnings: Yandere, dark, murder, grown-up Five
⠀
Okay, last straw. He kills them one. by. one.
Five: *slowly approaches, covered in blood* Baby? Oh, my angel. Hi... Wait, wait! Don't crawl back. It's me. It's me, my love. Look, I'm here. I'm here... Please don't cry. They can't hurt you anymore, they're all gone. I sent them to hell.