SWORD GAI: The Animation
ソードガイ (original)
A young man becomes host to a legendary infernal sword and, with the fate of humanity now in his arm, wields its demonic power against his enemies.
Starring
Watch "SWORD GAI: The Animation" on Netflix released in 2018. It's a animation and action & adventure show, and has a rating of 5.8 out of 10 from Imdb which is fairly okay for this kind of show.