Originally Posted by
Taeldorian
Definitely Tokyo ghoul. It's about a teenager (looks kind of young though but he's around 17-18) who goes out on a date with a crush/friend and she attempts to eat him (ghouls eat humans, human food tastes like shit to them, literally). You can check out what happens after, but all of this and some more happen within the first episode. It's really good in my opinion, both s1 and s2. I described this in a really crappy way, but it's definitely in my top 3.
It's not your normal shounen either, it's a bit different and definitely tragic. I was looking for something like attack on Titan and my friend recommended Tokyo ghoul, (hence why both of them are in my sig), we watched it together and I absolutely loved it.
Reasons: Amazing character development, good story line, amazing side characters. Try the first episode out and see if you like it. Ghouls remind me of Titans from AOT, eating humans, (some for fun and some for survival).
On a side note, first season has one of the most popular and definitely one of the best opening songs in an anime. Not sure if you care for this or not but it is so damn good. Unravel is the name of it.