Crosmando: But there's hardly any "bloody" violence in anime, it's all mostly "romantic comedies" ie an "everyday" schoolboy suddenly gets a trope of cute girls fighting over him, with some magic and preposterous accidental sexual situations thrown in. It's "childish" at the same time as not, some of the themes would be serious if they weren't played in comedy.
Movies like Akira, Ninja Scroll, Ghost in the Shell, they are basically their only type of anime in existence, they became (reasonably) well known over here in the West because of marketing of dubbed DVD back in the day, but they are unlike 99.9% of Japanese animation. That's kinda the point.
I can name several series that range from somewhat bloody to full on OMGWTF.
For instance...
Case Closed - mystery/detective series that tends to have more than a few murders
Code Geass - mecha combat show that is not afraid to kill people off
Basilisk - ninja drama with lots of fights and death
Cowboy Bebop - drama about space bounty hunters
Fullmetal Alchemist - story about two brothers attempting to find the Philosopher's Stone while one serves in the military
Martian Successor Nadesico - space mecha/combat series
Trigun - about an outlaw with a massive bounty on his head
Trinity Blood - about a world where vampires coexist with humans
Blood+
Samurai 7