So many people here have been talking about how this show sucks because "they're not scared even though they're in another world" or it's "just not that realistic" or "it's too average." WELL, this show isn't a so-called "deep" type of show; while some themes are displayed throughout the show, its not supposed to be a show where you ponder life questions for hours on end about. It's a show meant for your enjoyment, not for education purposes or whatever.
I don't know why people think the plot is bad, personally, it's very interesting for me.
The characters are amazing. I don't get why people constantly have to say "IT'S NOT REALISTIC!". OF COURSE it's not realistic! It's 7 high school prodigies who get stuck in another world! But that aside, the characters , again, are just plain amazing. Their skills and abilities are so advanced, and just watching them defeat an obstacle or opponent is just so satisfying. The fact that they are able to stand up to people who don't believe in what they do literally has me standing up and cheering for them every time they prove someone wrong.
I have yet to read the manga or light novel (whichever one is in english), but to get my fill after watching this show, I'm going to go to amazon right after this and download the book to my kindle app (and then maybe I'll come back and talk about how the manga is better than the anime or vice versa- no spoilers, though!).
If you still don't get how much I enjoy this show, I just spent an hour researching if/when a season 2 comes out.
UPDATE: I finished reading the manga. Yes, I finished all 7 books (up tp date) in one day. I know that the anime was based off of the manga, so the manga helped supplement my understanding of things that came across as confusing in the actual show. The manga was really amazing, and I'm glad I was able to see what happened after the ending of episode 12 of the anime (if you've watched the show, you know what I'm talking about). I really really hate when shows are left on a cliffhanger with no promise of another season, so reading the manga was exactly what I needed. Would recommend the anime to those who have enjoyed the manga (because there's nothing better than seeing it in color with actually movement, right?), and the manga to those who have enjoyed the anime. But reviewing the manga is a whole different review, so I'm going to stop here.
Anyway, if the producers of the anime see this review, please make a season 2!! I'm dying to see what happens next, even if I have completed the manga up to date.