Extremely compressed images in order to reduce file size and allow underpowered Android devices to run the game.
I see. Anyway, so far the only routes I've finished is the one where I married Bella, and the one where MC didn't have any love life. The first one was flawless, but I couldn't say the same thing for the latter. I encountered like 6-7 bugs, it was wise to save like every 3 minutes so that I didn't have to start over. I would've taken screenshots but I forgot