A genius engineer. He worked on the time travel machine that is used as the gateway between 1999 AD and 2999 AD. He also designed the TA-series of ships which are used by the girls. It is later revealed that the reason he chose to go back 1000 years in time back to 1999 AD was because he discovered the Yamamoto Yohko novels, and was intrigued by them. Following their premise, he created a gateway. When the gateway was completed, the first person he met was Yamamoto Yohko. He was surprised as he had thought of Yamamoto Yohko as only a fictional character in the novels. Source: Wikipedia