Do not believe those "Not Recommended" reviews. This anime might not be to your taste but you will enjoy it. The thrill, the mystery and the plot along with exquisite artwork and animation make this one of the most enjoyable anime so far. I wanted something unique rather than cliche to quench my thirst; this was the oasis. This anime saved me from the boredom of watching so many of those anime that will have almost the same flow of character development and plot. I don't want to spoil even a little bit so that you get the best experience while watching this anime.