One of the most realistic anime series I've seen. Mostly dramatic and depressing, but there's also hope and incredible friendship. I was only looking for love before watching this. Now I see brotherhood is even more important. It has sexual scenes, a little gore and blood so I would rate it 17+(Even tho I'm 15 :D). I really think this is a must-watch. After Clannad this is the most meaningful anime to me.