Artificial Chakra Fruit

 Once in a millennium, the Shinju bore a single fruit, consumption of which was deemed forbidden. Upon breaking the taboo and consuming the Chakra Fruit (チャクラの実, Chakura no Mi), Kaguya Ōtsutsuki gained an enormous amount of exceptionally powerful chakra, with which she was able to single-handedly stop all the wars that plagued the lands. Centuries later and ambitious scientist would learn the secrets of the Shinju and create his Chakra trees eventually creating Artificial Chakra Fruit.