Nomura's father influenced his interest in art and games early on, creating little drawings and unique Sugoroku board games for him. Nomura started drawing at the age of three years and developed his own Sugoroku games during his elementary school years. As a child, he spent much of his free time playing baseball, swimming, fishing and building fortresses. When he was in middle school, his father told him that an era of computers would come and bought him his own computer. Nomura played Legends of Star Arthur: Planet Mephius on it and started creating his own video games by learning programming. He first tried a Nintendo product with the tennis and ping-pong variant of the Color TV Game console and later borrowed a Family Computer in high school. Around that time, Dragon Quest became Nomura's favorite because it surprised him and introduced him to video games with story elements. His art teacher in high school pointed him towards the works of Final Fantasy illustrator Yoshitaka Amano. Nomura also created his own manga during class and intended to do this as a profession although he ultimately abandoned the idea. Nomura went to vocational school to learn magazine and advertising artwork. Nomura then looked for an advertising job at a publishing company. However, he eventually applied at Square after he had seen a job advertisement with a drawing by Yoshitaka Amano.