Which manga is similar to 'O Parts Hunter'?

There aren't many major differences. The manga and its adaptations mostly stay consistent in terms of story and characters.

The 'O Parts Hunter' manga often influences related works like anime or light novels. Sometimes they follow the manga closely, but there can also be creative differences and expansions.

One manga that could be similar is 'Fullmetal Alchemist'. It has a complex plot and well-developed characters like HxH.

One that comes to mind is 'Fullmetal Alchemist'. It has a great story, complex characters and a mix of action and emotion like Hunter x Hunter.

One manga similar to Monster Hunter could be 'God Eater'. It features intense monster battles and a post-apocalyptic setting.

I'd recommend 'Golgo 13'. It shares the thrilling and suspenseful aspects of City Hunter, featuring a skilled and mysterious protagonist.

I'd recommend checking out 'Hunter x Hunter'. It has similar adventure and action elements as 'The First Hunter'.

Maybe 'Death Note' could be somewhat similar. They both have elements of mystery and complex characters.

One manga that could be similar is 'Blood+. It has elements of vampire hunting and a dark, supernatural atmosphere.

I think 'The Heroic Legend of Arslan' might be somewhat similar. It has adventure and heroic elements like Mission Save the Hunter.