Hello Rockero69!
I plan on having ~10 chapters with an ending. Some have differing definitions on "harem", but "Promiscuous Protagonist" is the term I tend to go by. There will be more than several love interests, with the choice of "turning down", or jumping off of the path of a love interest.
None of the art is made with A.i.
Take a look at my weekly DevLogs on Patreon (yes, those are free, just like the AVN is free) https://www.patreon.com/nuii_pointer . Everything is made in Blender, a 3d software - including the animations. Currently as of writing this, there is one animation in Chapter 1 (part 1 of 3). Echoes of The Cataclysm is available to play for free.
Thank you for reaching out!