Which Japanese sect is part of Mahayana Buddhism?
Rinzai school: The Rinzai school (臨済宗 ; Japanese: "Rinzai-shū", Chinese: 临济宗 "línjì zōng") is one of three sects of Zen in Japanese Buddhism (with Sōtō and Ōbaku). Zen:  From China, Chan Buddhism spread south to Vietnam, northeast to Korea and east to Japan, where it became known as Japanese Zen.
i don't know