Sonju is a character from the anime "The Promised Neverland." He is a demon who forms an unlikely alliance with the main characters, Emma, Ray, and the other children, to help them survive and escape from the demon world. Sonju plays a crucial role in providing valuable information about the demon society, teaching the children survival skills, and protecting them from other demons. His complex character adds depth to the storyline and challenges the viewer's perception of demons in the series.
