1st thing to start..this is the best anime i've ever seen so far..
i'll start with advantages
Best Story ever..thrilling is Perfect ! its like real life with super power..not like other animes which's like super powers n some life =D
if u like to be thrilled,Mind screwed,with perfect explanation and action..then dun hesitate for a moment !..also Drama and characters are awesome
Art: i'd give it 8 coz chars r kinda different..but u'll get used to it as u go further
Disadvantages
its 1 thing actually which is Mecha..tho i didnt like the Mecha action scenes..or that anime being related to Mecha..but i still give it 10/10
Season 1 of this anime aint good enough..not COmpared at all to Season 2..
And if U've Watched DeathNote..then i'd tell u this..this Anime is much better in thrilling
that's all and i wont say any plot coz it's alrdy on site
enjoy ;)