Aerith's feed

Guys! I'm hunting for the novel link to start reading, but so far I have only found two websites.
First one is novel updates, but I can't find anywhere to click and actually start reading it (am I dumb?)
Second one is on AO3, but there's only 16 chapters and they aren't that long, so I'm wondering how come 16 chapters turned into +80 manhwa chapters (actually a lot more bcs there's still a lot to be adapted)

So, is that really right?? Is the manhwa giving us filler chapters?? Or maybe they're dragging the story?? Can someone please give me a light (and a reliable link too, if possible)?