Light-Father by Paul D. E. Mitchell
Approx. 138,430 words.
Published on February 20, 2012.
Harold Porter, a grieving lab technician is caught in an implosion in his university workshop and wakes up in a disused rail-yard surrounded by 12 orphaned children who think he's their saviour, the Light-Father. He realises that he has been given a new reason to live: to save these children from the insane Order who unleashed the Revelation Virus that killed their parents and the rest of mankind.