Its ai or at the very least ai assisted
1-
in the 5th image from the bottom(the one which mc is sitting besides the tree) you can see that mc's shoelaces make no sense. there are holes every where on the shoe for the shoelaces to go through. not just that but the mc is wearing different shoes in the main picture(the one "below what to expect") but maybe mc bought new shoes who knows?
the laces on the elf girls clothes looks wired too(4th image from below)
2-in the 3rd image from below. what is that face???
nevermind i havent played it maybe she is meant to canonically look bizzare?
3-
the direction of cosmetics and eyelashes/cosmetics/hairs keep changing(this may or may not be evidence of use of ai)
for example the cat girl's hair pin is one her left side in one picture and on her right side in another
or the mcs hair for example is pointing to his right in the tree picture but its pointing to his left in the bathing scene pic and it keeps changing in every other pic. maybe the mc decided to brush his hair different that day? lol
Edit(forgot to mention):yeah mc also has a button om his shirt in the pic that he is sitting besides the tree but that button is missing from other pictures
(or maybe the artist flipped the canvas by accident? but this level shading would require a pro artist and this repetetive rookie mistakes dont make sense)
the elf girl eyelashes look different in every picture and are often asymmetrical.
for example the her right eyelashes in the bath scene have: two points to the top. 3 point to the side and one point to below but her eyelashes in the city picture look different
as i said could be a rookie mistake but the level coloring doesnt match it
maybe they were drawn by different artists in tight schedules which would some what explain the inconsistency
i would be happy if the developer answered me to prove me wrong and not delete my comment then ban me like other developers who also used ai