From a young age, Sae has been cold, direct and very serious. He was always concerned about becoming the best striker in the world and only had time for things that brought him closer to his goal. He can also be arrogant and condescending, looking down on others even if they are older than him and have more organizational authority. He is selfish in his football game, but has demonstrated that he is able to restrain himself and play his position, not trying to upstage others unnecessarily.