The Demon Sakura Tree, also known as the Demon Cherry Tree, is a manga only character which, after getting tired of having the name of a man and his beloved written on it, absorbed the man who wrote on it and took his beloved as a sacrifice. One night while training Kuno wrote his name along with the "pigtailed girl" onto the tree (not realizing it's history) and is absorbed into it, causing Ranma to either get Kuno out of the Tree or being sacrificed.