You might like 'Nanatsu no Taizai'. It has a similar adventurous and magical tone as Fairy Tail. The characters have strong bonds and face powerful enemies, and the story has a good mix of drama and lighthearted moments.
Personally, I'd suggest Hunter x Hunter. It shares the elements of fantasy, adventure, and character development that are common in Fairy Tail and One Piece. The depth of the world-building and the complexity of the characters make it comparable.
They're quite similar. The anime mostly sticks to the style of the manga, with only a few tweaks here and there.
One manga that could be similar in style to Fairy Tail is 'Black Clover'. It has a mix of adventure, magic, and colorful characters.
Well, 'The Vampire Diaries' manga could be comparable. It shares the theme of vampire love and drama that Twilight is known for. Also, the character dynamics and emotional conflicts have some similarities.
One manga that comes to mind is 'Neon Genesis Evangelion: The Shinji Ikari Raising Project'. It shares some similarities in themes and style with the original Evangelion.
I think 'Monster' is quite similar. It has a dark and complex narrative like Oldboy, with deep character exploration.
One that comes to mind is 'Vinland Saga'. It shares similar dark and gritty themes along with complex characters.
One manga that could be similar is 'K-On!' It has a similar lighthearted and fun atmosphere with cute characters and school life themes.
You could check out 'Gunslinger Girl'. It shares some elements of intense action and complex characters like in Kill Bill. The storylines have a certain edge to them.
Not many mangas are exactly like Killing Stalking. But some that might have similar dark and intense themes could be 'Tokyo Ghoul' or 'Parasyte'.