There's a fanfic called 'Hajime's Discovery with Chiaki'. In this one, Hajime discovers a new side of himself with Chiaki's help. It delves deep into their characters and how they influence each other. It's quite a character - driven story that's really enjoyable.
One great Hajime x Chiaki fanfic I read was centered around their adventure in a virtual world. It beautifully depicted their relationship growth, from initial distrust to deep friendship. The author's description of Hajime's determination and Chiaki's optimism made the story engaging.
You can try websites like Archive of Our Own (AO3). It has a large collection of fanfics, and you can easily search for kiyotaka x makoto fanfic there. Fanfiction.net is also a good place. Just use the search bar and type in their names to find relevant fanfics.
One great kiyotaka x makoto fanfic is 'The Unlikely Bond'. It beautifully explores their relationship development. Another is 'Together Against All Odds' which has an interesting plot that shows how they support each other through various challenges. And 'A New Friendship' is also a good one that focuses on the early stages of their relationship.
One common theme is friendship development. Writers often explore how their relationship changes from being just classmates or acquaintances to something deeper, whether it's a strong platonic bond or something more romantic.
One common theme is friendship - to - lovers. Since they start off as friends in the original story, many fanfictions explore how that friendship blossoms into a deeper romantic relationship over time.
In the fanfiction 'Hidden Desires', Chiaki and Tori's story takes an interesting turn. The story delves into how they deal with their growing feelings while also facing the challenges of their work and personal lives. It's a more complex and engaging read for those who like in - depth character exploration.
Adventure themes can also be present. Maybe they go on an adventure together and their relationship blossoms during that time. For example, they could be on a quest to save their town or something similar.
A common theme is friendship - turned - love. Given their initial relationship as friends in the source material, many fanfictions explore how that friendship gradually blossoms into something more romantic. Another theme is mutual support. They often rely on each other for emotional and sometimes physical support in these stories.