Angolmois: Record of Mongol Invasion
アンゴルモア元寇合戦記 (original)
The story follows a group of samurai attempting to defend Japan from the first Mongol invasion in 1274.
Starring Asumi Yoneyama, Yuki Ono, Lynn, Rikiya Koyama, Shiro Saito, Shun Horie, Ryota Takeuchi, Yusuke Kobayashi, Kenji Hamada, Hidekatsu Shibata
It's a animation and action & adventure show, and has a rating of 7.1 out of 10 from Imdb which is usually fine for this kind of show.
Watch it here
Not found streaming from United Kingdom.