you have defeat your brother kyro, you about to walk away suddenly he whistle that you both use to do to connect each other, you stop and turn to him

You was about to reply back the whistle but suddenly an agent cover your mouth and hold you tightly

Agent-"don't answer him"

Your brother grinning and suddenly laughing like a crazy person and he was staring deep inside your eyes and continue whistle, he is no longer your brother