The festival called Obon is based in its traditions and style on the ancestor worship of Koshinto, but monks at various temples carry out the ceremonies differently due to the syncretic blending of Shinto and Buddhism, and so the "true" version of such traditions has become unclear.
「お盆」といわれるものは、そのしきたりや形式は古神道の先祖崇拝であるが、寺で行われ僧が執り行うことと、その原因である神仏習合の影響により曖昧になっている。