A story of the bonds between those who fight, in a world pushed to its limits. On one of the countless parallel worlds that exist throughout spacetime, humanity has fought a decades long war against the BETA, hostile extraterrestrial invaders, using humanoid fighting machines called Tactical Surface Fighters. This is a story of how humanity lives and dies while on the brink of extinction…<br>
<br>
(Source: Crunchyroll)

Episode 1 - The State of the World

Episode 2 - Recurring Worlds

Episode 3 - Something to Protect

Episode 4 - Comrades

Episode 5 - A New Power

Episode 6 - Transfer Experiment

Episode 7 - Promise

Episode 8 - The Capital in Chaos

Episode 9 - Battlefield

Episode 10 - Resolve

Episode 11 - Everyone's Thoughts

Episode 12 - Fate

Episode 13 - Graduation

Episode 14 - XM3

Episode 15 - Desertion

Episode 16 - Diary

Episode 17 - Return

Episode 18 - Sumika

Episode 19 - The Night Before The Attack

Episode 20 - Operation 21st

Episode 21 - The Light of Hope

Episode 22 - Escape

Episode 23 - Inheritance

Episode 24 - The World Moves On

Fuji TV

Graphinica

Yumeta Company

FLAGSHIP LINE

Crunchyroll

Bandai Namco Arts

aNCHOR

BS Fuji

Avex Pictures

Dentsu

Tencent

Muv-Luv Alternative