I'm pretty sure the main character is this seemingly simple brown haired boy with a red shirt who realises that the world isn't as innocent as they once thought when they found that their maternal figure(s) have had a shady past that makes them seem less of a good person. Also the apocalypse is imminent.
See more 'Steven Universe' images on Know Your Meme!<<< OMG! That explains why Peridot didn't summon her weapon when her and Steven were cornered by the mini clusters, she didn't know how because she was never taught! That bothered me so much while watching that episode.