Another angle is a recommendation system that suggests popular or trending doujinshi works based on user preferences, with a focus on certain themes like "kaachan" or other keywords. They might want a social feature where users can vote on which requests get prioritized.
In summary, the user likely wants a feature that enhances interaction between fans and creators in the doujinshi community, allowing for collaborative or request-based content creation with a focus on trending or popular themes.
User interface aspects: How would users submit requests or create content? The feature should be user-friendly, with categories for different themes, characters, or genres. Maybe a tag-based system similar to how tags work on social media platforms.
I need to consider the community aspect, since doujinshi is often about fan creations and interactions. Maybe a marketplace where creators can post what they're working on and fans can commission or upvote their interests. Integration with social media or forums could also be part of it.