In 'Berserk', the protagonist Guts embodies certain aspects of a real man. He's tough, resilient, and has a complex personality with both flaws and virtues.
I'd recommend 'Hunter x Hunter'. It features characters on quests that have parallels to real-life situations, with obstacles and growth that feel relatable.
One manhwa that could be similar is 'The Strongest Hero'. It has a similar focus on male characters and their development.
I think 'Nekopara' might have the most similar cat characters. The anime version really captures the essence and appearance of the cats from the manga.
One manga that could be similar is 'Stray Bullet'. It has a similar theme of a protagonist lost in a complex world.
I think 'One Piece' could be somewhat similar. It has adventure and characters growing stronger over time, like in Revival Man.
I think 'B' manga has a somewhat similar story. The themes and character developments share some commonalities.
You might want to check out 'Solanin.' It shows the lives of young adults dealing with uncertainties, dreams, and the challenges of everyday life in a very down-to-earth way. The story and characters have a real-life charm to them.
For me, 'Cardcaptor Sakura' has the cutest manga characters. The art style is beautiful, and the characters' expressions and outfits are just too cute. Plus, their storylines are engaging and heartwarming.
Well, 'Tokyo Ghoul' could be similar. Both have dark and gritty themes, complex characters, and intense battles. The storylines keep you on the edge of your seat. Also, the art styles have a certain similarity in their edginess.
One manga similar to D Grey Man could be 'Fullmetal Alchemist'. Both have complex storylines and well-developed characters.