Kadokawa announces a new collaboration anime project Isekai Quartet (異世界かるてっと) featuring OVERLORD, KonoSuba, Re: Zero, and Saga of Tanya The Evil (Youjo Senki). The new project is expected to air in Spring 2019.
The story revolves around the sudden appearance of a mysterious button that brought together all the characters from the series involved. The series will be presented in the style of the chibi mini-series featured in the individual series (OVERLORD – Pure Pure Purea Desu, Re:Zero – Re:Puchi Kara Hajimeru, Saga of Tanya the Evil – Youjo Shenki etc.).