Season 1

A mysterious red button appears before an unlikely ensemble—Tanya Degurechaff, the 16-year-old isekai protagonist Satou Kazuma, Overlord’s Ainz Ooal Gown, and Rem and Ram—who press it out of curiosity and are transported to an unfamiliar world. With no apparent route back, they must navigate a mundane school life, forge new acquaintances, and endure a classroom packed with beloved, quirky personalities that keep every day anything but dull.

201912 EpisodesComedy, Animation

Cast & Crew

Takehito Koyasu

Jun Fukushima

Kazuma Satou (voice)

Shin-ichiro Miki

Erich von Rerugen (voice)

Ai Kayano

Darkness (voice)

Sora Amamiya

Aqua (voice)

Kenta Miyake

Cocytus (voice)

Hochu Otsuka

Hans von Zettour (voice)

Chinatsu Akasaki

Felt (voice)

Inori Minase

Rem (voice)

Tessyo Genda

Kurt von Rudersdorf (voice)

Akeno Watanabe

Hamsuke (voice)

Emiri Kato

Aura Bella Fiora (voice)

Aoi Yuuki

Tanya Degurechaff (voice)

Mamoru Miyano

Pandora's Actor (voice)

Yuichi Nakamura

Reinhard von Astrea (voice)

Asami Seto

CZ2128 Delta (voice)

Jun Kasama

Wilibald Koenig (voice)

Yusuke Kobayashi

Subaru Natsuki (voice)

Daiki Hamano

Matheus Johann Weiss (voice)

Yumi Uchiyama

Mare Bello Fiore / Puck (voice)

Aki Toyosaki

Yunyun (voice)

Hiromi Igarashi

Yuri Alpha (voice)

Ayaka Suwa

Chris (voice)

Sumire Uesaka

Shalltear Bloodfallen (voice)

Satoshi Hino

Momonga / Ains Oooal Gown (voice)

Saori Hayami

Viktoriya Ivanovna 'Visha' Serebryakov (voice)

Yumi Hara

Albedo (voice)

Rie Murakawa

Ram (voice)

Takuya Eguchi

Julius Euclius (voice)

Nobuo Tobita

Adelheid von Schugel (voice)

Rie Takahashi

Emilia / Megumin (voice)

Masakazu Nishida

Vanir (voice)

Minoru Ashina

Satomi Arai

Beatrice (voice)

Masayuki Katou

Demiurge (voice)

Daichi Hayashi

Shiner Neumann (voice)

Episode Guide

Mysterious buttons materialize across the worlds of Tanya the Evil, KonoSuba, Overlord, and Re:Zero. When pressed, the characters are transported to a realm they could never have imagined.