I haven't read the manga for this one, nor did I even see all of season one for that matter, but I liked the first two episodes of season two. Then I saw episode 3, 4, 5, 6 and 7. They're all the same, some different views on the same thing, over and over again. They're all stuck in a time loop, experiencing the same thing over and over again, I believe they're at over 1500 times of the same two weeks without knowing it, except one person, they are starting to get severe cases of deja-vu and discover the time loop near the end of it but fail to stop it repeating.
It's an odd principle for an anime, most comments I've found are quite negative, comparing it to the Naruto fillers seems to be common. I don't dislike it though, it's something different.