A ending that leaves a pretty clear moral: the real demon is inside us, and we shouldn't let it take control of our emotions. Though, of course, that's pretty tough when we're put in situations where all we want to do is protect the ones we love. However, Samatarou completely got it! I really liked how they portrayed it—the animation is quite good for a fairly old anime, and the screaming? Damn, those voice actors are insanely good. Honestly, it's an anime I'd definitely rewatch. 10/10