anime adaptation of the Record of Ragnarok (Shuumatsu no Walküre) manga . According to the official website, Graphinica studio and directed by Masao Okubo (Fullmetal Alchemist: Brotherhood).
Check out the first 'trailer':
Therefore, the story begins when the gods call a meeting to decide whether to let humanity live or die. A Valkyrie makes a suggestion to let the gods and humanity fight one last battle. 13 gods will fight against 13 human champions in one-on-one battles to decide whether humanity lives or dies.
Finally Record of Ragnarok (Shuumatsu no Walküre) by authors Ajichika (illustration), Shinya Umemura (story) and Takumi Fukui (story) was published in November 2017, with the 4th volume being released in July 2019.