He is very bad at writing a tri-monthly manga, he wastes too many pages on unnecessary stuff when the short length of the comic compared to the space of time between each chapter means he needs to focus harder on getting a lot of details in. He's writing it like it's sengoku youko or biscuit...
Hehe I just read the first chapter yesterday and then luckily the second one was translated today. I'm lucky in all the ways that aren't useful at all.
The revenge plot feels kind of extraneous to the more interesting stuff going on, you could literally just not have the evil goddess and the dickass classmates and keep everything the same and it works better.
It looks like from the volume cover for 8 they go and visit Yuuna-sama in NeoTokyo at some point, but that seems like a long way off since I was looking at raws and didn't see it come up. It's been 3 months.