I'm sure of it! this is the sadest anime I've ever seen...I highly recomend...HOWEVER!!!! If you are not over 13 years old I'd like you to STAY AWAY from this anime!
I have good resons for saying this!
1. THIS ANIME CONTAINS A LOT OF VOILENCE! LIKE, TOTAL BLOOD BATH! It may not sound bad, but it is, but PLEASE! You watch at your own risk..
2. NUDITY! the main caracter and others will be naked a lot of the time. that may be DISTURBING on many!
3. .....I dont know...just felt for a 3rd. reson xD