No, I'm the dev. It's not abandoned. I'm just revisiting old scenes and backgrounds. Also, I wasn't quite convinced with the amount of content I had for the next update and I thought might as well I can add extra animations and story progression, couple of minigames. That's why it's taking way too long.
edit: Also adding a gallery and a reward system for minigames. (Rewards are basically lewd cgs of characters' from different universes.)