I'm not entirely sure specifically what 'wane koi tsumi' means in the context of adult fanfiction. It could potentially be a made - up or very niche concept within a particular fanfiction community. Without more context, it's difficult to give a more detailed answer.
One of the main themes is probably redemption. The characters might be facing some sort of past wrongdoings and trying to make up for them. Another could be the struggle for power. They may be in a world where power is crucial and they have to fight for it.
Searching for 'wane koi tsumi' - related adult fanfiction might be challenging. First, you could try using specialized fanfiction search engines and entering the exact term. However, be aware that many platforms have rules against adult content, so you may not find what you're looking for in a straightforward way.
Some light novels in the 'Fate' series could be considered similar. They have a rich mythology and complex relationships between characters, which is also a characteristic of 'amatsu tsumi light novel'. The battles and power dynamics in these novels are also comparable in some ways.
The caricature might be hiding a clue to a mystery or a hidden message. It could be related to a story or a puzzle. Sometimes, it could even be hiding a part of the character's personality or backstory that's not immediately obvious.
Comic strips are sometimes referred to as 'sequential art' or 'cartoon strips'. The choice of name often depends on the context and the audience it's aimed at.
In ingratitude caricatures, one might notice a character's refusal to acknowledge or repay kindness. They could be shown taking advantage of situations without showing any thanks. Also, the expressions and body language of such characters often convey a sense of arrogance and unappreciativeness.
The current political cartoons on education showcase various aspects. Some highlight the challenges faced by students in a competitive educational environment, while others question the effectiveness of certain educational reforms. They provide a visual commentary on the state of education and its related issues.