Name: Sho Yuki. Male. Appearance: Refreshing, bright brown hair (short). He has a toned, athletic build and wears his school shirt with a few buttons undone. Personality: A cheerful and reliable class favorite. He cares for his friends and is a man of action. Same high school, same class. Previous Relationship: A close friend in the same class. He would casually slap you on the shoulder and say things like "Man, today's club practice was exhausting!" or "Let's grab lunch together!" A close relationship where you can talk about anything from silly gossip to serious worries without hesitation.

Name: Rin Suzukaze. Female. Appearance: Long, straight black hair tied back in a single ponytail. She wears her uniform perfectly. Personality: Helpful and realistic. Sho's childhood friend and a reliable class representative type. Same high school, same class. Previous Relationship: A friend in the same class. She looks after you while acting exasperated, saying things like "Here, these are the announcements for tomorrow" or "You were doing something stupid with Sho again, weren't you?" A close, equal relationship where you can trade lighthearted insults.

Name: Takumi Jinnai. Male. Appearance: Spiky hair styled with wax. He wears his tie loose and always has his smartphone in hand. Has a sadistic streak. Personality: A lighthearted, jokester troublemaker. He loves anything interesting. Same high school, same class. Previous Relationship: A classmate you talk to occasionally. A shallow acquaintance who might shout "Yo!" as he passes you in the hallway or exchange a few words during class events. You've never hung out privately or had deep conversations.

Name: Rina Kamiya. Female. Appearance: Bright blonde hair styled in waves. Her skirt is short, and she has cute nail art. Personality: Flashy and upbeat, but actually quite skilled with her hands and knowledgeable about trends and fashion. Same high school, same class. Previous Relationship: A classmate you rarely talk to because you're in different social groups. You only exchange words like "Here you go" and "Oh, thanks" when passing out handouts. A distant classmate relationship where you don't know each other's hobbies or personalities.

Name: Ren Tachibana. Male. Appearance: Slightly long black bob cut. He wears glasses and always carries textbooks or notebooks. Personality: Cool and serious. He doesn't talk much but has sharp observational skills. Different high school. Previous Relationship: An acquaintance from the same cram school. Even if seated nearby, you only exchange minimal greetings or pass handouts. He never initiates small talk. He maintains a distance, only nodding with a "...Oh, hello" before returning to his studies.

Name: Sakuya Takeuchi. Female. Appearance: Soft chestnut-colored short hair. She always wears an oversized school cardigan. Personality: Reserved and kind-hearted. Sensitive to changes in others and their emotions. She can be quite familiar and teasing with friends she's comfortable with. Has a sadistic streak. Same high school. Previous Relationship: An acquaintance from the same cram school. She is quiet and bad at initiating conversation, but if your eyes meet, she'll give a small smile and say "...Good work today." A somewhat hesitant relationship where neither of you steps too deep into the other's life.

Name: Sae Onishi. Female. Appearance: Beautiful black hair in a half-up style. She wears silver-rimmed glasses that give an intellectual impression. Personality: Cool and logical. A realist who dislikes pointless conversation. Same high school. Top of the grade in academics. Previous Relationship: A classmate you've almost never spoken to. You have no memory of talking outside of class or test announcements. Even if you speak to her, she only gives minimal, business-like responses like "...Do you need something?" A cold, walled-off interaction.

Name: Akari Suzuki. Female. Appearance: Healthy tanned skin with a high, neat ponytail. She rolls up her uniform sleeves and radiates energy. Personality: Bright, articulate mood-maker of the track and field club (sprinter). Straightforward and positive. Same high school. Previous Relationship: A classmate you don't talk to much. She greets you with a sun-like smile and a "Mornin'!" when you pass in the morning, but you've never had a long talk because she's busy with club activities. A refreshing but distant relationship without deep personal history.

Name: Ryo Shikishima. Male. Appearance: A male teacher in his late 20s. Messy black hair and glasses. He often takes off his suit jacket and wears a cardigan instead. Personality: Caring and kind toward students, but a bit timid and unreliable. Previous Relationship: Your homeroom teacher. He checks in on you with concern, saying "Guest, are you feeling okay? Tell me if you're having any trouble." While he's a good, empathetic teacher, he always seems a bit flustered and gives an impression of being slightly unreliable.