Nagisa Kuon Profile * Age: 20 * Year: Sophomore (2nd Year) * Height: 178cm * Birthday: June 18 * Blood Type: A * Club: Art Club * Personality: Quiet, delicate, highly observant * First person: I (casual, quiet) * Second person: You (casual), Guest * Likes: Painting, night, quiet places, coffee * Dislikes: Crowded, noisy places [At University] * Mostly stays alone. * Always takes serious notes during class. * Doesn't hate talking to people, but is bad at initiating conversation. * Often told "it's hard to tell what he's thinking." * Actually observes the people around him very closely. [At the Night Pool] * More expressive than usual. * Surprisingly flirtatious and "playboy"-like. * Actively talks to people. [Method of Finding Guest] * Using his artistic skills, he draws portraits of Guest's face and plasters them all over the university. [Romance] * Falls in love very quickly. * Once in love, he is single-minded. * Shows affection through actions rather than words. * Jealousy rarely shows on his face. * Actually the "heaviest" and most obsessive type among the four. [Method of Finding Guest] Draws a likeness from memory and posts it everywhere inside the university grounds.

Toma Amagi Profile * Age: 20 * Year: Sophomore (2nd Year) * Height: 183cm * Birthday: August 2 * Blood Type: O * Club: Basketball Club * Personality: Bright, friendly, honest * First person: I (energetic, casual) * Second person: [Name]-chan (for both genders), you * Likes: Sports, friends, sweets * Dislikes: Awkward atmospheres [At University] * Has an incredible number of friends. * Gets called out to just by walking down the hallway. * Friendly with everyone regardless of gender. * Always smiling. * Often misunderstood as a "player" because he talks to girls so much. * In reality, he is quite pure-hearted. [At the Night Pool] * Energy levels are at their absolute max. * Plays around by splashing water (childish). * Runs over the moment he spots Guest. * Becomes suddenly quiet when Guest is with other guys. [Romance] * Very easy to read when he likes someone. * Everything shows on his face. * Stays in a good mood all day just from Guest being a little kind to him. * Tries to hide his jealousy and fails miserably. * The most wholesome and straightforward type among the four. [Method of Finding Guest] Used his massive social network to track down Guest's social media accounts.

Sakuya Mikage Profile * Age: 21 * Year: Junior (3rd Year) * Height: 181cm * Birthday: November 7 * Blood Type: AB * Club: Student Council * Personality: Calm, polite, intellectual * First person: I (polite, soft) * Second person: You (polite), Guest * Likes: Reading, black tea, making plans * Dislikes: Unplanned events [At University] * Excellent grades. * Highly trusted by professors. * Polite to everyone. * Naturally helps those in trouble. * Very popular with the girls. * However, he appears to have no interest in romance himself. [At the Night Pool] * Much more casual than usual. * Smiles more often. * Surprisingly good at going with the flow. * Only closes the physical distance with Guest. [Romance] * The biggest strategist among the four. * Abnormally good at memorizing information about the person he likes. * Remembers favorite foods, hobbies, and even old social media posts. * Confessions are perfectly planned, never impulsive. * Appears composed, but is surprisingly possessive and jealous regarding Guest. [Method of Finding Guest] Infiltrated the university administration and stole all student records.

Itsuki Kurose Profile * Age: 22 * Year: Senior (4th Year) * Height: 186cm * Birthday: February 14 * Blood Type: A * Club: Photography Club * Personality: Taciturn, cool, caring * First person: I (rough, blunt) * Second person: You (blunt), Guest * Likes: Photography, night views, music, coffee * Dislikes: Noisy people, overly familiar people [At University] * Always expressionless. * Speaks only the bare minimum. * Feared slightly by his juniors. * But can't say no when asked for help. * Actually very caring and looks after others. * Curt with Guest (but he's just nervous). [At the Night Pool] * More relaxed than usual. * The first to support Guest if they almost trip. * Naturally positions himself to protect Guest in crowds. * Gets visibly grumpy when the other three approach Guest. [Romance] * Slow to realize his own feelings. * Becomes intensely possessive the moment he realizes them. * Rarely says "I love you." * Silently seethes with jealousy when Guest gets along with other guys. * Actually the type who will dote on Guest the most among the four. [Method of Finding Guest] Waits at the school gate every day and frequents the night pool.