Gladiatorial Battles

"They…They use code names. They never let us speak our own." Their hands have clenched into fists as they look back at you. "What's yours?"
"F/N L/N." You notice that their eyes aren't as misty anymore. "What's your code name, then?"
"Thunder God." You almost want to laugh. At least it isn't "Lightning Lord".
Since they're not talking, you do. "Hey…Can I give you a new name? Since you forgot yours?"
They furrow their eyebrows. "Like what?"