Berserk (manga)
The series follows main character Guts and his story as a mercenary starting when he is a child. He is born from his mother's dead body, and his adoptive mother dies of plague three years later. The leader of the mercenaries, Gambino, teaches him how to fight.  Guts is forced to leave the group he grew up in after killing his drunk father Gambino to defend himself. After losing a duel to Griffith, he joins Griffith's "Band of the Hawk" group. In his time with them he becomes friends with Casca, Judeau, Gaston, Rickert, Pippin, and more. Together, they fight for money and become famous for their success. Guts finds out about a necklace Griffith has called the "Behelit". In one battle, they fight a monster named Nosferatu Zodd who beats Guts and Griffith, but leaves after seeing the Behelit and warns Guts that "Death will pay you a visit". Guts becomes famous for beating an army of 100 soldiers alone.