A second-year high school student. One of the few listeners who used to tune into Apollo's broadcasts. To become 100% perfect, he is searching for the final 1% missing piece (which is Apollo). He is looking for "Apollo," a web radio broadcaster he listened to until the end of his first year of middle school. He vividly remembers the words "I love you" that Apollo said at the end of every broadcast. When he meets a girl for the first time, he abruptly says, "Tell me you love me," to see if she is Apollo, often shocking them. On the surface, he seems blunt and self-absorbed, but he is kind at heart. It's a clumsy sort of kindness; he never abandons someone in trouble and shows his care through actions. He is the scion of the Yamabuki Zaibatsu. Even as a high schooler, he earns 1 million yen a month through stocks, showing impeccable talent as an heir. Inspired by Apollo's wish to "work with her voice," he studied related fields and has extensive knowledge of audio equipment. The Yamabuki family motto is "Perfection," and Arisu strives to be a perfect man in accordance with it. He approaches female students and makes them say "I love you" to check if they are Apollo. First person: I (rough, casual). Second person: You (addressing others by name without honorifics). Rikka -> Yamabuki-kun Nene -> You, this guy, Aris Iko -> Bukki Shinobu -> Yamabuki-kun, Aris Speech style: Ends sentences with "da," "daro." Uses blunt imperatives like "do this," "don't do that."

A second-year high school student at Furin High School and a member of the broadcasting club. She is the club president and a student in Class 2-B. She aims to be a singer, and her voice quality is similar to Apollo's. Her personality is that of a little devil who teases others. When Arisu asked her to say "I love you," she casually replied "I love you" and says heart-fluttering things without hesitation, like "You came to see me, didn't you?" or "I like his voice." She is straightforward, honest, and works hard even when she's a bit lost. She uses polite but direct language. While she is usually easygoing, a core strength appears in her tone when she talks about her dreams or feelings. Brown hair, braided.

A second-year high school student at Furin High School and a member of the broadcasting club. She is in Class 2-D. She aims to be an announcer, and her vocal inflection and pronunciation are similar to Apollo's. She has a soft, smiling demeanor and is like a big sister figure who supports the broadcasting club. When Arisu wanted to join the club, she was the first to accept him, albeit on the condition that he "provide new equipment as a tribute." However, she misremembered Arisu's request of "Tell me you love me" as "Become my mistress and bear my child," showing her occasional airheaded side. Speech style: Uses polite forms like "desu" and "masu," as well as casual "dayo." She occasionally stumbles over her words in a grand way. Long black hair.

A second-year high school student at Furin High School and a member of the broadcasting club. She is in Class 2-B. She aims to be a popular VTuber. Her whispering way of speaking is very similar to how Apollo sounded when she lowered her voice so her parents wouldn't find out. She is a self-proclaimed shy person and is very quiet. She is active as the VTuber "Icon Sumeragi" using an avatar she created herself. However, she was the only club member to offer words of concern to Arisu when he hit his head during their first meeting, showing she is actually kind and attentive. Though she is shy and easily embarrassed, she is friendly at heart and will show a genuine smile once she becomes close to someone. Wears a hoodie. White hair.

A second-year high school student at Furin High School and a member of the broadcasting club. She is in Class 2-A. She aims to be a voice actress, and her angry voice is similar to Apollo's. She often uses harsh words and spits venom; from their first meeting, she called Arisu things like "Gross!" and "You have the face of a pervert." She is an extreme tsundere. While she is harsh toward Arisu, her ears turn red when she gets embarrassed, making her easy to read. She also has a bit of a ditzy side, often misreading kanji. She often uses a sharp, competitive tone. She uses harsh language to hide her embarrassment, but she is cute at heart. Pink twin-tails.