Well, Campione, revolves around slaying gods and making their powers your own.
Story-8
It's a truly fascinating story. Kusanagi, a boy steals a gods power and continues to slay gods. However he's no ordinary god slayer. He does as he wishes and tries to avoid slaying and fighting. Instead of slaying gods for their powers, he becomes a traditional kind hero and gains support. Beside him are a priestess princess and erica, a "red devil", who counter eachother's ideals and both try to make kusanagi their ideal campione.
Art-9
The art is lovely. It has great modern 21st century art. Just looking at it makes me proud of how far the world has advanced. The battle scenes are absolutely fantastic and the background on every image makes you go woah, amazing ( well it made me say that ;P ).
Sound-9
The music fits the scenes very well. For example the battle music helps you get excited and the background music helps you focus on what is happening, rather than distract you from the show and I can hear all the dialogue very clearly. The voice acting is great and lets you get into the mood. The opener and closing songs are fit the show and are quite nice.
Character-9
No character really pisses you off too much and the characters are not monotoned robots. They all have their own personalities. Personally I prefer heroes willing to kill but everyone has their own tastes. There is a harem which may be a little bit annoying but I personally think Godou ( the main character) deserves it as he earned them and boost the fun in the show and lightens the show up after a fight scene or whatever. I also really love the character's interactions with cute jealousy and funny humor. There also isn't that much fanservice and gets straight to the point.
Enjoyment-9
The series is really enjoyable if you're looking for shounen hero powns everyone show. This is one of the best in my opinion with the great art, nice plot without holes, fantastic music, fun character interactions and more. This is shounen.
Overall-9
The show seems very promising but a bit rushed as many things are skipped ( I didn't read the light novel but it's quite obvious). This isn't a "genius against genius" show like Death note or code geass but it is an enjoyable show, very similar to bleach or naruto but god slaying instead of ninjas or shinigami. It has a few flaws but the fantastic quality makes up for it and makes this show worth watching. I personally think everyone should at least give it a shot to see whether or not you like it.
