I'd say 'Naruto' is a top choice. It has a rich world-building, diverse characters, and a conclusion that ties up most loose ends. Plus, it's had a huge influence on the manga industry.
For sure, 'Naruto' is a must-read. It has themes of friendship, determination, and growth. The action scenes are exciting, and the character development is amazing. Another one is 'Attack on Titan' - its intense storyline and dark atmosphere make it compelling.
One great romance manga is 'Fruits Basket'. It tells the story of Tohru Honda who lives with the Sohma family, some of whom are cursed to turn into animals of the Chinese zodiac when hugged by the opposite sex. It has a wonderful blend of romance, comedy, and drama. The relationships between the characters are complex and deeply emotional, making it a very engaging read.
You could try 'Ao Haru Ride'. It has beautiful art and a touching story of young love and self-discovery. The characters are very relatable and the plot keeps you engaged.
There's also 'The Coldest Winter' which is a great completed Twilight fanfic. It takes the story in a different direction, exploring different aspects of the characters and their world. The author has a unique writing style that makes it a captivating read, especially if you're looking for something a bit different from the original Twilight narrative.
One great manga for a love story is 'Fruits Basket'. It beautifully weaves together the story of Tohru Honda and the Sohma family. The love stories within are not just about romantic love between characters like Kyo and Tohru, but also the love of friendship and family. The art style is charming and really helps bring out the emotions of the characters in their various relationships.
'Ouran High School Host Club' is a great option. Haruhi Fujioka, a scholarship student at an elite school, accidentally breaks an expensive vase in the Host Club room. To pay off the debt, she has to work as a host. There are various romantic subplots, especially the relationship between Haruhi and Tamaki Suoh, which is filled with comical misunderstandings and heart - fluttering moments.