New anime is coming out all the time and alot of them can be a bit hit and miss, though Satsuriku No Tenshi which translates to Angels of Death seems to be a hit and has piqued my interest.
Satsuriku No Tenshi/Angels of Death first aired on July, 6th of this year and there is currently 11 episodes as of writing with 16 being the total for this season, the anime has a score of 7.01 on myanimelist.com though i feel it deserves i bit more perhaps an 8.0.Source
I am not yet up to date with all 11 episodes and am currently on episode 6 though so far i am impressed and intrigued, to give a quick and relatively spoiler free synopsis, the story revolves around a 13 year old girl called Rachel Gardner who wakes up in an abandoned building and is seemingly suffering from amnesia, she then comes across some questionable characters who all want to kill her for some reason, she ends up befriending one of these questionable characters who goes by the name Isaac "Zack" Foster.
Below is episode one if you would like to see it though the quality is not great, HERE is a link to a better version though it does not work very well on mobile as far as i am aware.