The supervising editor for Kaiu Shirai and Posuka Demizu's The Promised Neverland manga said in an interview with Mainichi Shimbun's Mantan Web news website on Sunday that the manga has reached its "turnaround point." The term "turnaround point" (折り返し地点) refers to a halfway point (as in a race, where the runner turns around on a track), though the editor did not clarify whether the manga is half done in terms of length or if it has simply reached the second of two major parts to the story.

The editor's full statement is as follows [Highlight white text to read spoilers]:

With the escape from their beloved home and Mom complete , the manga entered a new arc, and the serialization and story reached its turnaround point. From now on, as the story races at full speed to the end, I would be happy if you continue to watch over these kids as they learn the truth of the world and meet their destinies.

The editor also said that author Shirai brought to the blueprint for the manga to the Shonen Jump editorial department, and the search for the artist took about three years. After they decided on Demizu as the artist, they spent another half a year refining the character and setting designs. Due to the long planning phase, the skeleton of the story — including concepts, characters, and scenes — have already been planned out.

Shirai and Demizu launched the manga in August 2016, and the seventh compiled volume shipped on January 4. The manga has 2.1 million copies in print in Japan. Viz Media is serializing the manga in its digital English edition of Shonen Jump , and is also publishing the volumes in print.

Source: Mantan Web