Meetings were held in Tokyo, Nagoya and Osaka with many business leaders.
The focus was on chips, artificial intelligence, and clean energy projects.
Japan External Trade Organization and Japan Bank for International Cooperation will help the plans.
India hopes to become a strong maker of chips by using its young talent and Japan's expertise.
The goal is to attract about ten trillion Japanese yen of investment over the next ten years.
Both countries want to create more chips, the tiny parts that make phones and computers work.
They also talked about using clean power and building factories that need steady electricity.
Japanese companies may invest many Japanese yen and United States dollars in Indian projects.
Want to learn even more? Click here to read the full story!