Unless you've been living under a rock in recent years, you've at least heard of the 2011 anime Mirai Nikki, known as Future Diary in English. Its one of the most popular anime of the last few years, though its reception is very mixed, with some people loving it and others flat-out despising it. A few years after it finished, another series by that series' mangaka was announced to get an anime adaptation for the Spring 2016 season. That series, of course, being Big Order. While opinions on Mirai Nikki are rather split, most can agree with something about Big Order. Its trash.
The series revolves around the concept of the aptly named "Orders", which are powers that originate via one's own wishes. Our story primarily focuses on Hoshimiya Eiji, a boy who supposedly caused an apocalypse that wiped out most of the population. As a result of this, he's despised by pretty much everyone, even so far as to get an assassin hired solely for killing him and him alone. Eiji now is on the run and has to save his sister, who is suffering from an illness likely to kill her in a few months. Well, that's what the story SUPPOSEDLY is. In actuality, the plot of Big Order is a huge pile of nonsense. The series can't decide on if it wants to be serious or silly. One of the biggest examples of this is when Eiji makes a miko pregnant but touching her bunny ears of all things during a major chase sequence (just roll with it), causing her belly to instantly swell up. Now, that may SEEM like a big plot point, but they decide to pretty much throw the idea away immediately in the next episode, pretty much making the supposed pregnancy subplot a complete waste of time. This is also one of those shows that thinks that shoving tits and ass into your story automatically redeems it, which it really doesn't. Some plot elements also feel like they're made up on the spot (and not even foreshadowed) solely to create Deus Ex Machinas. Most of the few things in this show that AREN'T incomprehensible are overall dull and feel like they were lazily copied from other manga/anime. (Such as how the Orders have an uncanny resemblance to the Stands from Jojo's Bizarre Adventure) Lastly, the pacing is so ridiculously fast that you have no idea on what's even going on. This is not helped by the atrocious world-building, or lack there of. In addition to having nothing in this world explained, there are some major inconsistencies. For instance, this is apparently a post-apocalyptic setting, but somehow, news buildings and schools survive because plot convenience. How lovely.
Big Order's characters suffer from being both bland and unlikable. Eiji is the stereotypical edgy and obnoxiously loud shounen protagonist with some siscon thrown in for good measure (but its not incest cause they're not blood-related hurr durr (and yes, this IS something in the actual show)). Rin I guess is supposed to be a Yandere, but she lacks the charm of other characters of her type, and only acts according to the plot regardless of whether it fits her character, resulting in a blank slate basically. Sena is Eiji's blood-unrelated sister, and who we are supposed to sympathize for because she's cute and nothing more; even getting asspats by her brother even when she turns out to be a part of one of the major conflicts. The rest of the cast is so forgettable that I don't even remember their names. And considering that there's a lot of them, that's pretty bad. We're just introduced to them suddenly and the audience can't even feel to have a grasp of who they are (their actions make them come off as unmemorable at best); and at most they just serve as plot devices. They attempt to build romantic relationships, but the characters have no chemistry whatsoever so you can't feel invested in any of the romances present.
Production wise I suppose it looks decent. There are several neat-looking effects used within each episode, though at times they feel sloppily done (particularly in the last episode). The OST, on the other hand, is generally cheesy 80's pop and doesn't even remotely fit in with the designated scenes, and as such, it kills any tension those scenes might've had.
The only thing big about Big Order is that it's a big mess. With a shoddily put together story, a dull cast of characters, and sheer laziness through out, Big Order offers nothing to the table, and as such, I suggest avoiding it like the plague. Now, there is something that may make Big Order somewhat recommendable. Its a great show to laugh at. Even then, its outclassed in that aspect even within its own season. Take Mayoiga, a series that provides the same unintentional hilarity, but at least it's made by staff who want to have fun first and foremost, even if it's not to everyone's liking. Not saying that Mayoiga's even remotely a good show unironically, but at least it's not this.