Shiraishi is the captain of Shitenhōji. He is heralded as having "Perfect Tennis", and is referred to as "The Bible of Shitenhōji." Due to Shiraishi's hard work, he masters the basic forms of tennis and gradually obtains the skill where he can perform strokes without mannerisms or habitual actions that can lessen the use of stamina, which has a great effect. Shiraishi himself believes that perfect tennis is silly notion and finds his own style boring, but he realized that only winning matters, so he continues to employ his style. He uses the "Entaku Shot" which uses a massive sidespin to cause the ball to fly in a ring formation until it hits the course without bouncing. He is the first person to ever beat Fuji in an official singles match, as well as defeating all of Fuji's counters. He is voiced by Yoshimasa Hosoya in Japanese media, and played by Harukawa Kyousuke and Sasaki Yoshihide in the musicals.

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