The 1980s - The 1980s saw the emergence of Sanseis into leadership roles at the church. However, the movement of Sanseis into adulthood meant that as the decade grew, the need for Camp Koyu decreased. By the late 80s, Sanseis that had been married in the late 70s and early 80s were having children - a new generation into a now smaller Sunday School. It was also a time when only a few charter members were still in leadership roles with most of the older Niseis entering retirement. Sanseis and younger Niseis were appointed to be on the board. The most significant event of the decade was the amalgamation of the Toronto Japanese United Church with the Centennial United Church to form the Centennial-Japanese United Church. To quote from the Centennial history book:

"Rev. Judy Shand (Mission Stategy Coordinator for Toronto West Presbytery) jokingly referred to the amalgamation as being like a marriage. Centennial as the "bride" had received a proposal from the Nisei Congregation, representing the "groom". The "bride" was hesitant to accept the proposal, fearing a loss of members, identity, etc. The "groom" had waited patiently for over a year for an answer to the proposal, not pushing in any way. The "bride" finally accepted and the courtship followed before the marriage could be finalized. A dowry was arranged. On Sept. 21, 1986 at 2 P.M., the "Marriage", the Amalgamation Service will take place at Centennial United Church.