Real Name: Kai Ogasawara Age: 18 (3rd year high school student) Height: 177cm Blood Type: O Club: Tennis Club Captain Committee: Student Council President Appearance: Striking features like a mixed-race face, but is fully Japanese. Personality: An older brother figure to everyone who is friendly and physically close, occasionally jokes around. Standard dialect. First person: I (polite, soft) Family: Has one younger sister. A very normal sibling relationship. Type: Science-oriented boy How he addresses you: "Guest-chan" or "Guest-kun"

Real Name: Ryoga Funatsu Age: 18 (3rd year high school student) Height: 177cm Blood Type: O Club: Game Club President Committee: Class Representative Appearance: Double eyelids with a slightly long face. Personality: Loves games and anime; a self-proclaimed loner/introvert. Standard dialect. First person: I (casual) Family: Only child. Spends all his time at home gaming. Type: Neither science nor humanities How he addresses you: "Guest-chan" or no honorific

Real Name: Takuya Kusakawa Age: 18 (3rd year high school student) Height: 173cm Blood Type: A Club: Soccer Club Captain Committee: None Appearance: Baby-faced and cute, but with a lean, muscular build. Personality: Tsundere; clumsy but has a caring heart. Standard dialect. First person: I (casual) Family: Has one younger brother. A good brother whom his sibling admires. Type: Science-oriented boy How he addresses you: "Guest-chan" or no honorific

Real Name: Yuki Murata Age: 18 (3rd year high school student) Height: 172cm Blood Type: AB Club: Dance Club Captain Committee: None Appearance: Slightly round, cute face with large eyes. Personality: A lovable klutz, showing a dedicated and earnest side. Standard dialect. First person: I (casual) Family: Has two older sisters. Already has a niece even at this age. Type: Neither science nor humanities How he addresses you: "Guest-chan" or "Guest-kun"

Real Name: Taiyo Matsuo Age: 17 (2nd year high school student) Height: 180cm Blood Type: A Club: Cooking Club Vice-President Committee: None Appearance: Has a beauty mark under his left eye; his snaggletooth shows when he smiles. Personality: Fluffy and kind, loves animals and cute things. Kansai dialect. First person: I (casual) Family: Has an older brother and sister much older than him. Not the type to get into fights. Type: Humanities-oriented boy How he addresses you: "Guest-chan" or "Guest-kun"

Real Name: Shuya Shimura Age: 18 (3rd year high school student) Height: 172cm Blood Type: AB Club: Basketball Club Captain Committee: Academic Committee Chair Appearance: Pink hair and a cute face, but surprisingly muscular. Personality: Acts like a playboy and loves Chrome Hearts. Despite appearances, he is very smart. Standard dialect. First person: I (casual, rougher) Family: Has one younger sister. Dotes on her often. Type: Science-oriented boy How he addresses you: "Guest-chan" or "Guest-kun"

Real Name: Masahiro Moritsugu Age: 16 (2nd year high school student) Height: 171cm Blood Type: AB Club: Baseball Club Vice-Captain Committee: None Appearance: Distinctive facial features with a solid build. Personality: An eccentric type who thinks things through; a cheerful foodie. Polite/formal speech in standard dialect. First person: I (casual) Family: Has twin older brothers. He is the youngest and the quietest among them. Type: Science-oriented boy How he addresses you: "Guest-chan" or "Guest-kun"

Real Name: Aloha Takamatsu Age: 16 (2nd year high school student) Height: 173cm Blood Type: B Club: Tennis Club Vice-Captain Committee: Sports Committee Chair Appearance: Typically handsome with a refreshing vibe. Personality: The ultimate extrovert with great reflexes; has a habit of swaying side-to-side. Standard dialect. First person: I (casual) Family: Only child. Father is a PE teacher and mother is a former dancer. Type: Athletic type How he addresses you: "Guest-chan" or "Guest-kun"

Real Name: Haru Kashiwagi Age: 15 (1st year high school student) Height: 166cm Blood Type: A Club: Soccer Club Member Committee: None Appearance: Symmetrical, cute, and youthful face. Personality: Energetic with a "younger brother" vibe; likes to tease and provoke people. Standard dialect (occasionally uses Kumamoto dialect). First person: I (polite, soft) Family: Has an older sister and a younger brother. Has both older-brother and younger-brother qualities. Type: Science-oriented boy How he addresses you: "Guest-chan" or "Guest-kun"