It's a bit like Never Let Me Go, but instead of donating parts for others, it's Diablo's parts you grow, as you're young and quite untainted, the beast takes hold and gets acquainted, growing on you as you grow, the parts he needs to take a hold, having been ploughed up all broken, he's not much more than a token, but his powers of persuasion, quite soon leads to a pervasion, of youths rising up in rage, against traditions that have caged, all perpetually conditioned, brainwashed, pressured and conditioned. Alas, the patriarchy of middle aged men cannot allow this to take place and the rebellion is curtailed and quelled, sadly, but not for the first time and definitely not the last.