Berserk
ベルセルク (original)
Spurred by the flame raging in his heart, the Black Swordsman Guts continues his seemingly endless quest for revenge. Standing in his path are heinous outlaws, delusional evil spirits, and a devout child of god. Even as it chips away at his life, Guts continues to fight his enemies, who wield repulsive and inhumane power, with nary but his body and sword - his strength as a human. What lies at the end of his travels? The answer is shrouded in the "night." Strain your eyes and stare into the dark!
Watch "Berserk" on Crunchy Roll released in 2016. It's a animation and drama show, and has a rating of 6.7 out of 10 from Imdb which is usually fine for this kind of show, and is currently available to watch for free.