Since I'm not familiar with 'oda na bunga' specifically, it's difficult to define what this fanfiction is about. It could be a niche piece of fanfiction within a particular fandom. The 'oc' part implies that it might involve characters created by the fanfic writer rather than just using the existing characters from the source material related to 'oda na bunga'. It could cover a wide range of themes, from adventure to romance, depending on the writer's intention.
As I don't know much about 'oda na bunga oc fanfiction', I can't give direct recommendations. But generally, when looking for similar fanfiction, you can start by exploring fanfiction communities related to the general genre or theme that 'oda na bunga' might belong to. Check out the works with original characters in those areas and see if you can find something that has a similar feel.
Overall, Panic X Panic manga stands out for its intense plot and vivid character development. Unlike some common manga tropes, it offers a fresh take on the genre. However, it might not appeal to everyone's taste due to its specific themes and art style.
The Sonic comic could be bad because of weak art, or a story that doesn't make sense and doesn't capture the essence of the Sonic universe. Also, maybe the dialogue is clunky and uninteresting.
Some sad cartoons that often have this effect are those that deal with themes like lost love, death of a beloved character, or unfulfilled dreams. For example, 'Grave of the Fireflies' is known for its heart-wrenching story.