Chapter 4

"Optimal" is the fourth chapter of The Promised Neverland.

Synopsis
Emma and Norman go to the storage room to find a table cloth for the wall. Ray got curious of the two and they tell him about the demons and the farm. Ray tells them there are 37 kids in the house but Emma wants everyone to escape together. Norman tells Ray that he loves Emma. Mama, then check her transmitter that are 3 of them around.

Trivia

 * Ray shows the latest book at the orphanage is a machinery book entitled "Mechanical Engineering and the History of Humans" by Alex Mikhaylov from 2015.