Fives answers with a bitter, strained gasp of unsteady laughter. "Happy?" It's half whisper half croak before his voice fails again.

How am I supposed to be happy, when I've lost everything that matters? He's not sure he's ever been happy, that he even knows what happiness is, but how could he ever experience it without his brothers or his purpose? How could he ever be happy trapped in this strange place with a monstrous god?

You just want... a toy. Entertainment.