Now this raises some questions, who made the blueprints, and if the nitori that died was really trolltori of this "workshop" with the "Blueprints" is part of a bigger trolling to the stupid yukkuris?
Unless blueprints is only a yukkuri metaphor to something and really trolltori died.
This is all just speculation, but perhaps they killed the wrong Nitori (who was supplied the "blueprint" by the trolling one?) and TROLLtori takes over that ones nest afterwards?