Once upon a time, there was a boy who lived happily with his beautiful and kind mother. However, when the boy realized that he could not remember his own name or what happened yesterday, he was shocked to learn the true identity of his mother. The boy's name was Ren'omaru. Ren'omaru set out on a journey to find his real mother, accompanied by the mysterious baby monkey Hyonta, but... This is the first new edition in 16 years of a medieval horror story by Kondo Yoko, with the theme of "mother."