Manga aggregation sites (like WeLoveManga) often have incorrect chapter numbering. They sometimes split one full weekly chapter into two parts (e.g., "Chapter 99" on a site might actually be the second half of Chapter 49 in the official count). Always check the content against the plot summary to ensure you are reading the correct progression.
Overall impression
By the time a series reaches the high 90s (if following official Japanese numbering), the narrative is typically deep into the final conflict or the resolution of the romantic tension.