I don't think it fits the category of a good or a bad anime. It has the right concept to continue on its streak and it doesn't have the right concept to be a stand alone anime. I'm hoping for another season to clear out any previously created conceptions. It's not an anime that should be among the greats at all, but it's enough to keep it interesting for any season that might come afterwards. Both the story and the suspense are sufficient in that regard and I hope they will keep it up for a possible next season, because otherwise it's a below mediocre showthat noone should be watching anytime soon.

Due to its interesting concept and story telling I still feel like it's a good anime, but it definitely needs more to make that promise truthful.