What is the birthday of the writer of the game series whose first game was "Onikakushi-hen"?
Jirō Suzuki: Jirō Suzuki (鈴木次郎 , Suzuki Jirō , born February 14) is a Japanese manga artist. Higurashi When They Cry:  The first game in the series, "Onikakushi-hen", was released on August 10, 2002, and the eighth and final game in the original PC series, "Matsuribayashi-hen", was released on August 13, 2006.
February 14