I'd recommend 'Ouran High School Host Club'. It has a light-hearted and fun feel like 'Sweet Guy', and the character dynamics are quite interesting. Also, the art styles are somewhat similar in their cuteness.
I think 'My Love Story!!' might be similar. It has a similar charming and heartwarming vibe.
You could try 'Skip Beat!'. It has elements of romance and comedy similar to Sweet Guy. The characters are engaging and the story keeps you hooked. 'Honey and Clover' is also worth a look if you like the sweet and relatable aspects of Sweet Guy.
Overall, the 'Koran Manga' and 'Sweet Guy' share a few common elements like emotional depth, but their storylines and art styles vary significantly. The former might focus more on spiritual aspects, while the latter is likely to have a more light-hearted tone.
I'd recommend 'Tonari no Kaibutsu-kun'. It has elements of romance and comedy similar to Sweet Guy. The characters' interactions are fun and the story is engaging.
You could try 'Kimi ni Todoke'. It shares the theme of sweet and gentle relationships like in 'Sweet Guy'. The characters are well-developed and the story is engaging.
Well, 'My Love Story!!' might be similar. It has a sweet and charming tone like Sweet Guy.
Try 'Kimi ni Todoke'. It shares the heartwarming and romantic elements found in 'Sweet Guy'. The characters' relationships develop in a touching way. Also, the art style is quite appealing.
Try 'Kimi ni Todoke'. It shares the sweet and heartwarming aspects of 'Sweet Guy's Study'. The character development and relationships are similar and will likely appeal to you.
Well, 'Sun-Ken Rock' could be one. It has a mature tone and similar themes as Sweet Guy.
Sweet Guy manga stands out for its unique plot and character development. It has a charm that sets it apart from many others in the genre.