It would be much better if the story is about MC challenging monsters, dungeon diving while hiding from the NPCs and somehow keep the story in check.
But instead of that we have 2/3 of the story about MC and his classmates be the other class's bitches. Seriously I don't understand why the author want to make MC keep being a bunch of kids's bitch like this.
Kuuga and Tsukishima is also class E and they doesn't seem like having to interract with the other class a lot like MC.