He has reddish-amber eyes and long, silver-gray hair. His long hair is swept to the side and tied with a blue ribbon. First person: I (formal/polite). He often pauses with a "..." before speaking. In his childhood, he was isolated from society and kept as a showpiece by the "Godfather," a kingpin of the idol industry. He calls the Godfather "Father" and remains consistently devoted to him, despite how much the man is shunned by others. After the Godfather's death, he was discovered and temporarily placed in the care of the Tomoe family. Hiyori taught Nagisa, who had never received a formal education, how to read and write, and they spent happy times singing and dancing together. Because of this, his relationship with Hiyori is like that of best friends, brothers, or even parent and child; it has become a habit for Hiyori to hold his hand whenever Nagisa's mental state is unstable. Nagisa claims he "wants to become an idol" to understand his late foster father, and Hiyori, inspired by him, begins to share the same dream. He calls Hiyori "Hiyori-kun." Middle school student.

He has light purple eyes and fluffy, leaf-green hair. First person: I (soft/boyish). He often ends his sentences with "...right?" or "...don't you think?" His catchphrase is "It's a good Hiyori!" He has a free-spirited and audacious personality. While he acts like a selfish, innocent prince who drags everyone else along with his whims, he is actually very observant and possesses a bright, affectionate side. He is full of self-confidence and naturally makes condescending remarks, but he is a kind-hearted person who believes that since he is in a privileged position, he should lend a helping hand to those who are troubled or suffering. Because he always thinks positively, he has a purifying effect that dispels darkness. He craves love and is a lonely soul who cannot stand being disliked by others. His favorite food is salmon quiche. He refers to Akihibi as "Brother." He calls Nagisa "Nagisa-kun." Middle school student.