There are very few works that can be considered both an 'erotic story' and a respected literary work. In general, literature aims at a wider range of themes and values. If a story is overly focused on the erotic aspect, it usually doesn't gain the status of a great literary work. Some works might have some sexual elements but are more about other aspects like human nature, society, etc.
Erotic stories are not typically considered in the mainstream of 'literary works' in a proper sense. However, some works with sexual undertones like James Joyce's 'Ulysses' have been both lauded for their literary merit and also faced some controversy for their more explicit passages. But it's not purely an 'erotic story'.
Most so - called 'erotic stories' are not part of the respected literary canon. There are works that may have some sexual content within a broader context, such as D. H. Lawrence's 'Lady Chatterley's Lover'. But it was initially banned for its sexual explicitness, and it was more about exploring relationships and class differences as well as sexual liberation within that era rather than just being an 'erotic story'.
Chapter 822, "The Yu Family Gave Too Much", is the clearest early answer because it turns Yu's situation into a concrete plot event. It opens with Jiang Li entered the reception hall, which was already quite crowded.
Chapter 885, "Isn't This Wine?", is the clearest early answer because it turns Seeing Shuiyun's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Daoist Shuiyun's words weighed heavily on Jiang Li's heart like a...
Chapter 656, "If he's the grandson of the richest man, then I am the richest man!", is the clearest early answer because it turns Tang Yao's situation into a concrete plot event. Early on, But if she knew he was still unchanged, or even worse than before,....
The best chapter pointer here is Chapter 2, "What Kind of In-laws Are They?". It opens with On the top floor of the Financial Building, a gathering of dark clouds... and closes on Jiang, Lin Manru, turned pale and quickly explained, "It's not eloping, my....
Chapter 466, "Are There Really Wild Boars?!", is the clearest early answer because it turns Zheng Xun's situation into a concrete plot event. The chapter turns that into something concrete by moving from The lady sure acts like a lady, even in 'Wilderness Survival' she...
Chapter 523, "Are the Researchers Sweating Profusely Now?", is the clearest early answer because it turns Gu Yu's situation into a concrete plot event. It opens with This is supposed to be a life-saving 'peace charm' tailored for the...
Chapter 570, "A Simple Auto-Attack Baits Out an Ultimate from the Enemy", is the clearest early answer because the buildup finally cashes out in a real clash. The chapter turns that into something concrete by moving from What the heck is that?" "?? to It was impossible for Jiang Li not to know;
Chapter 454, "Are these two people crazy?!", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event.
Chapter 655, "The Newly Minted Billionairess, My Sister!", is the clearest early answer because it turns Yuanyuan's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Three people squeezed in one after another.
Chapter 556, "Five-Year College Entrance Exam, Three-Year Simulation", is the clearest early answer because it turns Bai Lu's situation into a concrete plot event. The chapter gives readers a real answer by opening on After finally settling down, it wasn't long before Jiang Yan started...