Wait, I should consider if there's a possible typo or misunderstanding. "Hardcore moaning" could be a mistranslation or a specific term in some contexts. Maybe they meant "dynamic moaning" or "intense emotional expression." Alternatively, in anime or certain media, vocal sounds (like "moans") are a genre. I should check if they're referring to that. But the user mentioned "romantic storylines," so perhaps they want to explore how vocal or expressive behavior is depicted in romantic narratives.
