Berserk, JoJo no Kimyou na Bouken Part 1: Phantom Blood Recommendations
Both series contain a headstrong protagonist and an arch rival, who in one way or another ruined their pasts, so now protagonists seek revenge and are trying to find a way to stop them. The atmosphere in both mangas is similar when it comes to battles and will to fight as well as mythological themes.
Both mangas are similar when it comes to mood and action. They are filled with fights, monsters and gore. The storyline is also similar: both feature a protagonist who seeks to defeat a former friend, who has destroyed their life. The antagonists are also quite similar: ambitious men who would betray everyone around them to reach their goals.
Very manly and violent old school manga with a lot of action. Both are about an epic rivalry between the main character and the villain. Also in both manga the villain is very charismatic and beloved by most, until the MC discovers his true evil nature.