Chapter 137

Conversion is the one-hundred-thirty-seventh chapter of The Promised Neverland manga.

Synopsis
Ray and Emma discover the truth behind the Seven Walls. Meanwhile, Norman and his companions start marching their way into the royal capital.

Plot
Ray collapses onto the ground as he starts to lose his memories. A young Emma came out of the cabinet, announcing how she had found a way to escape 's maze. Emma was surprised when she saw Ray as an old man, the latter asked who is she, an agitated Emma slapped Ray, de-aging him as Ray turned back to his young self. Emma explained to Ray about her theory on the situation they are in; the reason why the two of them became young and old repeatedly is due to their consciousness; the desert they were currently in and how the clothes changed when they transformed into a certain age were triggered by their subconsciousness. Emma proposed to Ray to uncover the current location's true form, they had to stop and rewind time. Ray called Emma a weirdo, Emma asked him to imagine and recall them as children.

Emma and Ray, transformed into children, joined hands as they tried out Emma's theory. the sand of the desert soon rose up and disappeared, with a portion of the sand becoming the moon. The desert soon turned into a forest, and the forest soon turned into a giant cube – the true form of the location they are in. Ray started to mumble about the theory as a confused Emma watched him from behind. Before Ray could question Emma about, a cube appeared behind Emma and Ray. The two stepped closer to the cube as they noticed a hole within.

Back at the Paradise Hideout, Barbara and Cislo were training several of the inhabitants their marksmanship. Vincent watched from a building, as he asked Norman how training they make them better additions for the team. Norman denied him, saying how they are only useful for logistical support. Vincent then asked Norman if they could use "the thing", saying how it will make it in time. Meanwhile, Norman dressed up in his hood and rode on a horse, with Barbara and Cislo and a large number of experiemental orphans from Λ7214, the group soon make their way to the Demons's Imperial Capital.