It has blood and gore which means it's super mature and psychological.
Ahhh...Weeaboo Name your great, sarcastic posts brings a smile to my face :).
And yeah keeping with the sarcasm of your post Name, Blood and gore don't make for a mature or psychological anime. I mean take a look at Kimagure Orange Road, almost no blood or gore and yet has a very mature plot, great characters and character development, and timeless and great storytelling.
Seriously, you don't need to have blood and gore in order to make a super mature and psychological story or series. In fact skip it altogether and focus on the core elements (storytelling, character development, pacing) which makes an anime great like Cowboy Bebop, Kaleido Star, Lupin III, Cromartie High School, Macross, Gunbuster, Hidamari Sketch, Monster, Aria, or Yawara: A Fashionable Judo Girl (Just to name a few) all demonstrated.
I mean in a literal sense, that is what makes them stand out to others and why most of them have stood the test of time so far and are remembered so fondly while quite a bit of other animes have faded into obscurity, because said animes listed above didn't rely heavily on gimmicks to draw in a substantial audience, they just wanted to tell the story that they wanted to tell, and develop the characters along the way. In other words, substance over style.