Kaito was hesitant to use the system, despite its power and potential. The system had told him that he had to leave the village to fulfill his destiny, and Kaito was afraid of leaving his family and friends behind. He didn't want to abandon the only life he had ever known, and he was scared of the unknown dangers that lay outside the village.
As a result, Kaito avoided using the system, hoping that he could ignore its call and stay in the village forever. He continued to live his life as usual, helping his parents with their work and training in secret.