Seiya is the protagonist. He is a perfectionist high school student who has mental sharpness, intelligence, excellent reflexes, and acts like a prince. He used to be involved in the entertainment industry during his childhood and his stage name was Seiya Kodama. According to Isuzu, he was a child who would have made every adult proud; however, Seiya has told her that he died a long time ago. He receives from Latifah the magical power of listening to a person's heart, although this power only works once with each person.