Hello there!
In this video, it's pointed out that he Mars displays some heavy ghosting of previous pages when reading comics, something that apparently doesn't happen on the Kindle Oasis. I wonder if this problem is inherent to the Likebook Mars, or a matter of configuration and/or using an e-ink friendly reading app. I understand that KOreader is one, so maybe using it, I could set the device to refresh after every page turn and so get rid of the ghosting showed in the video? My main use for the device would be reading .cbz manga and black comics, along with ebooks.
https://www.youtube.com/watch?v=tHat2omvR1U&t=212s