Question: what is gakkai in japanese?
Answer: Soka Gakkai (Japanese: 創価学会, Hepburn: Sōka Gakkai, "Value-Creation Society") is a Japanese Buddhist religious movement based on the teachings of the 13th-century Japanese priest Nichiren as taught by its first three presidents Tsunesaburō Makiguchi, Jōsei Toda and Daisaku Ikeda.