Oh Boy, a Even Traumatizing Nightmare for N… This Is the scene in Episode X. N’s nightmare is Different than In English. N wakes up in a horrifying forest and as he explores there, he sees F. Before N can speak to F, F (who is mind controlled) grabs N to the villains which made D add a mind controlling device to N and turn it on. Fun Fact: That is Also the nightmare That made N find out that F Is mind controlled.
Credit to all. Update: I added the Music!