Functionality: Draft. Clean copy

Just yesterday he had his own apartment, job, friends, a dog, a settled life… and today the world seems to have turned upside down: no one recognizes the guy, not even his closest friends, and the documents confirming his identity crumble to dust. Madness? No, a cruel trial, after which Kirill becomes a functional -- a person endowed with superpowers and the ability to move between parallel worlds. Who are these functionals? What is their purpose? And what will Kirill pay for his new, improved life?