The Promised Neverland will receive a new extra chapter in the manga , which will focus on the character Isabella , where we will be able to see more about the character's journey, or, as it was announced, the "truth" about her.
The book has already received an extra chapter with a total of 36 pages focused on the character Krone .
The Promised Neverland manga was published by Shueisha Weekly Shonen Jump magazine from 2016 until its conclusion this year on June 15th.
Source: ANN