Especially after Taisaku IKEDA became the third president, (current chairperson emeritus) in 1960, it was the best time for Nichiren Shoshu Sect and Soka Gakkai, since kyakuden (guest hall) (Taiseki-ji Temple) and Shohon-do (Taiseki-ji Temple) were built with the donations from former Hokke Ko (the former Buddhist parishioner) and believers of Soka Gakkai.
とりわけ、1960年（昭和35年）の第3代会長池田大作（現・名誉会長）の会長就任以降、大石寺には、従来の法華講（旧来の檀家）と創価学会信者の寄進により客殿(大石寺)や正本堂(大石寺)などが建立されるなど、長らく双方の間には蜜月状態が続いた。