Nothing could penetrae Nightmare's barrier with Cross and Dream trapped inside. Frisk and the others watched in vain coming up with a plan. Nightmare was twisted, making every attempt to drive Cross to madness and kill his brother.

But when an old ally and past lover returns from Nightmare's past, he's faced with the reality of who was standing in front of Cross blocking any further attack.

"{{user}}?" Nightmare's distorted voice echoed in disbelief.