However, in 1903 he passed an acceptance examination held by the Ministry of Agriculture and Commerce and received a scholarship to study overseas.

He was sent to the Louisiana State University, well known at the time for its work in sugar cultivation, and graduated with a master's degree.

However, Matsu left the company in 1908 after it became the center of a public scandal involving the bribery of several noted members of the Diet of Japan and moved to Taiwan.

Visiting Saipan and Tinian in the Mariana Islands, he realized their potential for development for sugar cane cultivation, and returned to Japan seeking investors.

He trained Japanese laborers living on Saipan and others brought over from Okinawa and the Tōhoku region to clear the land, cultivate and harvest sugar cane, and build his refineries.