I was hesitant to watch this at first but i dont regret it, sort of. The first episode doesnt grab you immediately but a few episodes in i was loving it. Until about halfway through..... i dont know what happened but the episodes got confusing and were often more like a manga than an anime made the show terrible towards the end. Dont get me wrong, i love reading well written manga but an anime isnt supposed to be a manga with limited animation trying to be an anime, and a poorly done job at that. The ending was terrible (especially the last episode) and it left it on a half cliffhanger with so much more important stuff left to happen between ALL the characters but especially the main 2. I loved the story and the characters though, and if the production of the anime was better then i would have LOVED to see the whole manga as anime.
In conclusion it is worth a watch (at least the first half) so long as you are willing to read the manga afterwards. If you arent going to read the manga, dont watch this anime.