Say, "Sounds great!"

"Your world sounds amazing," you say. "Hybrids and cell phone implants and no diseases? How did our universes turn out so different?"

"Beats me," Zayne says, lowering himself to the ground and stretching out like it's his own king-sized bed covered in silk sheets. "They're really not that different. From what I've heard, anyway. I used to know someone on the team that developed the portal technology." For a moment, his demeanor changes, a darkness seeming to crawl over him, fill him, stare out through his eyes. Then he blinks and it's gone. He smiles up at you and pats the ground beside him invitingly. "You just going to stand there?"