Both blades made an arc towards Kurt's neck, but he didn't move.
When the [MIDNIGHT SISTERS] were inches from Kurt's skin, however, they stopped still, and no matter how much strength the older Kurt would put into it, the blades just wouldn't move.
"I don't know much." The younger Kurt answered, looking straight into his older self's eyes. "But I do know one thing, and I'm sorry to say that... But your world is no longer yours to return to."
He saw tears coming down his older self's face as he kept on speaking.
"You weren't able to save it, and even I don't know if I'll be able to. But you can't trade your soul for a chance to go back..." The flashes were now more like vivid images in Kurt's head, and he knew more or less why his other version planned on sacrificing him.
He wanted to go back to his home world, to be able to get another shot at saving it.
At saving the ones he loved.
But the younger Kurt too had something to go back to.