covers for volume 1 & 2 are great
cover for volume 3 looks like trash.
colors don't match, proportions are wrong. it's like it's for totally different manga
as other commenter said, separated pages of a spread are bad,
but also unnecessary. we can zoom in (if you find it too small), so It's better to just put spread (single wide page)
I'm pretty sure that the "good" dryad killed the hero,
for some reason (e.g. her sister committing taboo, or she wanting her sister to stay)
And now "evil" dryad is trying to get revenge