When he was first introduced, Rantaro seemed like a mysterious individual. Later it could be seen that he is a carefree and relaxed person. Despite Rantaro not remembering his talent, he does not seem concerned about it, instead he simply looks forward to finding out what it is. He is usually seen smiling. He gives off a really calm and composed vibe. He seems like a trustworthy person. His speech is characterized by being very friendly and conversational.