I got this information from What's in YOUR Name?. I did not write any of this.

Gary
Your first name of Gary creates a serious, thoughtful nature, shrewd, efficient, and business-minded. You are one to make your own decisions, and not be influenced by others. You desire independence and freedom from the authority and interference of others. You are not overly ambitious, preferring instead just to seek stable, settled conditions which are adequate to meet your responsibilities. In your personal relations with others, you are inclined to be rather serious, and not to see the humour others see, or to respond spontaneously. Your positive manner and outlook can make others feel that you are imposing your will on them and even interfering in their affairs. Weaknesses in your health caused by the influence of this name centre in the head. Head colds, sinus conditions, hay-fever, and weak eyes are relative conditions. Also, your tendency to worry can lead to insomnia and other overwrought conditions.

Shigeru
The name of Shigeru creates a mature, self-possessed, and responsible nature. You are an organizer and leader who exercises sound and fair judgment in all your dealings, both business and personal. The name is a very practical influence, causing you to take your responsibilities seriously. At times it is difficult for you to see the lighter or more humourous side of a situation because of your serious attitude. Your highly capable and efficient nature make it difficult for some people to approach you. Although you desire to serve your fellow man, you may at times lack tolerance for those who are less self-assured and whose approach to life is not as positive and optimistic as your own. You are strongly independent and would be happiest when working without supervision, preferably in your own business where you have the challenge of "standing or falling" by your own decisions. A good material standard of living is of utmost importance to you and you are careful to select only the best quality in all your purchases. You enjoy the responsibility of home and family, and you appreciate a settled environment. You may fail, however, to express the little gestures of affection and appreciation that would mean so much to those close to you.