The winter 2020 anime project Isekai Quartet 2 that focuses on the Overlord and Saga of Tanya the Evil characters and more has long wrapped up its run and at the end of it we had learned that a sequel series was coming.
The series has Minoru Ashina writing and directing the project with character designs by Minoru Takehara, who also serves as the chief animation director.
A mysterious button suddenly appears one day, and characters who press it are taken to a new world to gather.