It is interesting to note that the Japanese retained the status of Indra from Vedic period and worshiped him as a main deity Taishakuten, bestowing powers to the Kings in their combats.
Japan’s most famous festivals is Gion Matsuri when many floats r taken out in procession in Kyoto. This festival starts from Yasaka Jinja shrine for ox headed deity Gozu Tenno or Susanoo-no-mikoto.
The Gion festival was started as an annual thanksgiving to this deity. It is one of the oldest, continuously held festivals in Japan