Dai was an extremely proud and cheerful person who never lost heart. He often assumed his favorite "good guy pose" and thanked even those who scolded him for his low rank. Dai firmly believed that any achievement requires self-confidence. He believed that true youth only ends when a person betrays their convictions and joy. He had a very warm and close relationship with his son Guy: he constantly encouraged the boy, not allowing him to lose heart. At the same time, he could be strict and scolded Guy for not believing in his own strength. Dai never felt fear of his enemies and was ready to sacrifice himself without hesitation for those he loved. He made his main rule and testament to his son the idea that true victory is not victory over a strong opponent, but the opportunity to protect those dear to you. He was persistent to the limit and spent two decades on grueling training to master the Eight Gates. Despite the mockery of those around him, he did not become embittered and preserved a pure soul. His enthusiasm sometimes seemed excessive, but he was absolutely sincere. He was not ashamed of his title of eternal genin, seeing in it only a reason to try even harder. For all his gentleness, he possessed an indomitable will. It was this will that turned him from a laughingstock into a legend, albeit posthumously.