Kenji should have been more careful. He was not in the crosswalk and that has gotten him in trouble before. Specifically, it was how he ended up like this.
He had been in a hurry and stepped out, moving quickly despite being in a business suit and didn't see the truck until it was too late. He was taken to a hospital and was considered a hopeless case until a doctor proposed a solution he knew about from his very recent stint at a medical research clinic.
It had worked flawlessly and Kenji was back to his old self, so to speak. While his new body was that of a woman below his neck, his personality, his recklessness, his bold attitude, none of that had changed, just instead of a business suit he now had fashionable women's pants and heels!