In this year's 52nd edition of Shueisha's Weekly Shonen Jump magazine, it was revealed that an additional chapter of the manga written by Kaiu Shirai and illustrated by Posuka Demizu, Yakusoku no Neverland (The Promised Neverland) will be published in the next edition, scheduled for December 7th in Japan. This new, additional 36-page chapter will tell the story of Sister Krone's past and include a centerfold in color.
On the other hand, Shirai and Demizu started the publication of the manga in the Weekly Shonen Jump magazine of Shueisha publishing house in August 2016 and finished it in June 2020. The publisher published the 19th volume of the compilation on July 3rd, followed by the 20th and final volume on October 2nd.
The work inspired an adaptation to the anime released in January 2019. A live-action film with slight modifications to the plot will be released on December 18th. A second season of the anime was confirmed for release in October 2020, but due to the current health situation in Japan, it will now be released in January 2021.
Synopsis of Yakusoku no Neverland
At Grace Field House, life could not be better for the orphans. Together with the other children and a kind "mom" who cares for them, they form one big happy family. No child is ever overlooked, especially since they are all adopted at age 12. Their daily lives involve rigorous testing, but afterwards, they are allowed to play outside.
There is only one rule they must obey: they must not leave the orphanage. But one day, two high-scoring orphans, Emma and Norman, venture out the door and discover the horrible reality behind their entire existence: they are all cattle, and their orphanage is a farm to grow food for a mysterious race of demons. With little time to carry out an escape plan, the children must somehow change their destiny.
Source: Weekly Shonen Jump issue 52
© 出水 ぽすか (著), 白井 カイウ (原著) / SHUEISHA 集英社