Shortly after the Tokyo Olympics in 2020, a major earthquake hits Japan. Amidst the chaos, siblings Ayumu and Gou of the Mutou household, begin to escape the city with their family of four. The sinking Japanese archipelagos, however, relentlessly pursue the family.

Plunged into extreme conditions, life and death, and the choice of meeting and parting—in the face of dreadful reality, the Mutou siblings believe in the future and acquire the strength to survive with utmost effort.

  Type: ONA
Episodes: 10
Aired: Jul 9, 2020
Studios: Science SARU
Source: Novel
Genres: Sci-Fi, Drama

Director : Masaaki Yuasa
Series Director: Pyeonggang Heo (Rainbow: Nisha Rokubou no Shichinin episode director)
Script: Toshio Yoshitaka (Dragon Ball Super)
Character Design: Naoya Wada (Flip Flappers animation director)
Color Design: Satoshi Hashimoto (Koutetsujou no Kabaneri)
Director of Photography: Toshikazu Kuno (Hero Mask)
Sound Director: Eriko Kimura (Penguin Highway)
Editing: Kiyoshi Hirose (Mob Psycho 100)
Music: Kensuke Ushio (Boogiepop wa Warawanai (2019))
Studio: Science SARU

The Mutou siblings, Ayumu and Gou, will be played by Reina Ueda (Darwin's Game) and Tomo Muranaka (World Trigger), respectively. Yuko Sasaki (Kaze to Ki no Uta Sanctus: Sei Naru Kana) will play the children's mother, Mari, and Masaki Terasoma (Steins;Gate) their father, Kouichirou.

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