Forever 16

What if Gene didn't die after being tossed down the lake? What if he was saved and was in a comatose for 8 years? What if he wakes up from his coma only to have no memory that he had helped Noll in his cases through Mai during said coma? Find out what happens when a 16 year old Gene is suddenly in a 24 year old body [Hints of Naru X Mai.]