I'm a librarian who loves anime, manga, and reading a wide variety of genres.
Now we have another person who accidentally helped a monster and feels guilty about the results. Milan(show spoiler)
This, all of this, is so complex, widespread, and deeply embedded that I don't know if even killing Johan could stop any of it. It's not that the whole world is evil – Tenma keeps coming across good people, too – it's just that this isn't something killing one person could solve. Tenma's efforts seem futile.
So, now we know that Johan and Nina
(Original review posted on A Library Girl's Familiar Diversions.)