just let you know,
its not mainstream .
its rare case.
Buddhism, which began in northern India as a world religion, is mainly categorized into Theravada Buddhism (Nanden bukkyo [Buddhism that spread from India to Sri Lanka and Southeast Asian countries such as Myanmar, Thailand, Laos, and Cambodia]) which spread in southeast Asia (Khmer Dynasty, Sriwijaya Kingdom), and Mahayana Buddhism (Hokuden bukkyo [Buddhism that spread from India to northern Asia]) which spread to China, the Korean peninsula, and other regions through the western regions of China (Central Asia).
japanese buddhism are Mahayana Buddhism.
but japananese arranged to that more than that.