per this reference of Itsunen Shoyu, who did he convince to bring Zen Buddhism to Japan?

Context: In 1642 he travelled to Nagasaki as a trader in Chinese medicine, and in 1644 entered Kofukuji Temple, becoming its 3rd abbot in 1645. Established by monks immigrated from China, the temple was then a base of the Ōbaku school of Zen Buddhism in Japan. In 1654 after multiple requests he succeeded in persuading Yinyuan Longqi, the 33rd abbot of Wanfu Temple to emigrate to Japan, where he founded Ōbaku, the third and final major Japanese Zen sect.

Answer: Yinyuan Longqi (Ingen Ryuki) the 33rd abbot of Wanfu Temple