Show's 4th "relay" promo video streamed

The official website for the Isekai Quartet crossover anime project began streaming a fourth "Relay" promotional video for the anime on Friday. The video features characters from both The Saga of Tanya the Evil and Overlord franchises.

The anime will premiere on April 9 at 24:30 (effectively April 10 at 12:30 a.m.) on Tokyo MX , before later airing on MBS , BS11 , AT-X , and TV Aichi . The show will stream in Japan on AbemaTV .

The show is a crossover anime featuring characters from the Overlord , Konosuba - God's Blessing on This Wonderful World! , Re:ZERO -Starting Life in Another World- , and Saga of Tanya the Evil franchises. The anime will feature the characters in super deformed form.

Minoru Ashina ( Kaiju Girls , Pure Pure Purea Desu Overlord shorts) is scripting and directing the project. Minoru Takehara is serving as both character designer and chief animation director. Studio Puyukai ( Kaiju Girls , Lord Marksman and Vanadis , Pure Pure Purea Desu Overlord shorts) is animating the work.

In the anime's story, a mysterious button suddenly appears one day, and characters who press it are taken to a new world to gather.

Kadokawa stated in the anime's announcement that all four franchises together have more than 16 million book copies in print, and more than 500,000 combined Blu-ray Disc and DVD sales totals. All four light novel series are in the "isekai" (another world) genre, and each has inspired manga and anime adaptations.