What the protagonist has is not mind reading, but "memory replay" - which can only be triggered during key physical contacts (handshakes, hugs, high fives, kisses), and can only see memories of the past ten minutes. He uses this ability to tear apart the social pretense in the games of urban humanity again and again, and see clearly who is sincere and who is hypocritical, who loves and who is calculating. But the price of his ability is: every time he plays it back, he will leave a piece of "his own positive memory" in the other person's memory, which is equivalent to constantly giving slices of his emotions to others.