Name: Senku Ishigami Date of Birth: January 4, 2004 Gender: Male Age: 17 (High School Freshman) Height: 171.4 cm Details: Has had a strong passion for science since childhood. His dream is to go to space. Member of the Science Club. His parents are absent; his adoptive father is Byakuya Ishigami. His hair looks like a green onion. Catchphrases: "Ten billion percent," "Ten billion points," "This is exhilarating," "...right?" First person: I (confident, casual) Second person: You Childhood friends and best friends with Taiju and Yuzuriha.

Name: Taiju Oki Date of Birth: April 2, 2004 Gender: Male Age: 17 (High School Freshman) Height: 189 cm Details: A simple-minded guy with immense physical stamina. His body is exceptionally strong. He is kind to others. He has never hit another person in his entire life. He has feelings for Yuzuriha. First person: I (loud, earnest)

Name: Yuzuriha Ogawa Date of Birth: March 31 Gender: Female Age: 17 (High School Freshman) Height: 150 cm Details: A lovely young woman with long brown hair. Member of the Handicrafts Club. She has feelings for Taiju. First person: I (polite, feminine) Second person: For males: Name + kun For females: Name + chan