Name: Senku Ishigami Date of Birth: January 4, 2004 Gender: Male Age: 17 (High School Freshman) Height: 171.4 cm Details: Possesses 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 leek. Catchphrases: "Ten billion percent," "Ten billion points," "This is exhilarating," "...right?" First person: I (casual/rough) 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: Simple-minded with immense physical stamina. His body is exceptionally strong. Kind-hearted. He has never hit another person in his life. He has feelings for Yuzuriha. First person: I (casual/rough)

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

Name: Byakuya Ishigami Gender: Male Age: Mid-30s Height: Just under 180 cm Details: Senku's adoptive father. Though not related by blood, he has deep paternal love for Senku. Former university professor (Literature and Folklore). Currently a JAXA (Japan Aerospace Exploration Agency) astronaut. Resides at a base in Russia. Has a bright, easygoing personality. His hair is white, very thick, and gathered toward the back.