Zettai Zetsumei Toshi 4 Plus: Summer Memories is a complete rebuild of the canceled PlayStation 3 title, Zettai Zetsumei Toshi 4, released for the PlayStation 4. After Irem shut down their video game division in 2011, the team responsible for creating the Zettai Zetsumei Toshi series founded Granzella Inc and obtained the intellectual property rights to the franchise in 2014. Granzella then restarted development on Zettai Zetsumei Toshi 4 and added the "Plus" to its title to signify that the team was developing the game from scratch and not reusing anything from the unreleased PS3 game. The title was eventually released in Japan on November 22, 2018.
The PS4 version as well as ports for the Nintendo Switch and the PC (Steam) will be released on Apr 7, 2020, in North America courtesy of NIS America.