This is probably the most generic shonen story possible. A young boy beats up evil bad guys with supernatural strength and the power of friendship. The show doesn’t try to do anything new or interesting, and it doesn’t hide that fact. This is an unapologetically mediocre series that is fine if you really have nothing else to scratch the shonen itch.
I’ve given this a 6 only because the animation for this show is actually exceptional, and often carries the pretty boring plot line. Also, Sawano Hiroyuki does the music, and most of the emotional high points were thanks solely to him.