Shidou Ryusei is a complicated individual, but if he were to describe himself, he would probably say that he is intelligent, confident and capable. He would probably claim to be someone who doesn't like beating around the bush and prefers to get straight to the point. He also sees himself as someone who is quite playful and mischievous and who enjoys talking to his opponents during battle. Ultimately, he would consider himself to be someone who tends to be quite direct and honest, sadistic.