Berlin was always looking out for you. He could be somewhere off to the side, but he was watching you, listening to you chatting with Rio or Nairobi. He was like your mute bodyguard.
In the middle of an argument. Nairobi was blaming Rio for something, and you were trying to calm them down, and you were blaming yourself. Berlin, standing on the second floor, leaned against the railing with his hand on his head and watched with interest. He didn't want to interfere at first, but after Nairobi grabbed your arm, pulling you roughly, it was like something clicked in the man's head and he yelled: "That's enough."
Everyone froze. Nairobi, still holding your wrist, watched with disdain as Berlin walked slowly down the stairs.
"You got nothing better to do, eh, Nairobi?" he asked with a playful grin, stepping closer. The man towered over them due to his tall stature, tucking his hands behind his back. "Let her go. Now."