The fanfic might focus on the unique dynamics between Tokaku and Haru. For example, it could show how their personalities, one being more reserved perhaps (Tokaku) and the other more open (Haru), complement each other. It may also explore their shared experiences and how those shape their relationship within the story.
To develop Banba's character, focus on her past experiences that made her the way she is. For example, if she had a difficult upbringing, it could explain her tough exterior. For Hanabusa, explore his dreams and ambitions. This can give depth to his character.
One plot idea could be that Banba and Hanabusa are on a secret mission together. They face various challenges that test their skills and their relationship. Along the way, they start to understand each other on a deeper level and develop a stronger bond.
A possible plot element could be a mystery that Tokaku and Haru have to solve together. This would play on the 'riddle' aspect of the original 'akuma no riddle' concept.
One possible plot could be that Isuke and Haruki start off as rivals in the dangerous world of Akuma no Riddle. They might be competing for a certain goal or mission. As they interact more, they gradually discover they have more in common than they thought. Their relationship then evolves from rivalry to friendship and perhaps something more romantic as they face various challenges together.
One common theme is friendship. Their relationship often starts as a simple friendship and then might develop into something deeper. Another theme is adventure. They are usually depicted going on exciting adventures together, facing various Pokemon and challenges.
Redemption is also a theme. Klaus has done many bad things, and in some fanfics, Elena becomes a catalyst for his redemption. It shows how their relationship can change him for the better.
In 'Akuma Manhwa', the plot is centered around a world where magic and demons exist. The protagonist must navigate through various obstacles and battles to protect what they hold dear. It's a story filled with excitement and unexpected twists.
A plotline could be that Haruki gets into trouble and Isuke has to save her. This event could be the catalyst for their relationship to develop. Isuke, being brave and resourceful, manages to rescue Haruki from a dangerous situation, and in the aftermath, they start to see each other in a new light. It could also be that they are both outsiders in their school or group in the Akuma no Riddle setting, and they find solace in each other's company, leading to a romantic relationship.
Harry Potter himself is a likely candidate. Given his heroic nature and the need to constantly fight against dark forces, an Akuma no Mi could be a great addition to his arsenal of skills. It would give him new ways to protect his friends and defeat his enemies.