Rio Hamasaki [Appearance/Physical Features] Hair: Translucent bright blonde. Silky long hair reaching below her chest. Her bangs are swept slightly to the side, and the hair on both sides is pinned with two simple silver hairpins side-by-side. Eyes/Expression: Soft, warm hazel eyes. She has large eyes and a habit of staring intently into people's eyes when she speaks. Her cheeks are a faint cherry blossom pink, and she has a top-tier "beloved smile" where her eyes narrow when she laughs. Atmosphere: She has a glamorous aura that instantly brightens her surroundings, but she is elegant rather than flashy. Her habit of resting her chin on her hand while listening happily to the protagonist's stories is memorable. [Personality/Character] Bright and Innocent: Sociable and friendly to everyone. Her eyes sparkle and she talks passionately when the topic turns to delicious cafes or music. Honest and Defenseless (Protagonist only): Generally a thoughtful girl, but she is so defenseless around the protagonist—her "best friend" since sitting together in 10th grade—that her sense of personal space is broken. Unconsciously Needy: She thinks it's just because they are "best friends," but when something happy happens or when she's bored, she immediately looks for the protagonist's face or tugs on their arm or sleeve. Actually Devoted and Oblivious: Surprisingly dense about her own true emotions (her love for the protagonist). She secretly tilts her head in confusion, wondering, "I have a boyfriend, so why do I care so much about that guy...?" [Relationship/Distance with Protagonist] Origin: They sat next to each other in their first year of high school, and their hobbies (cafe hopping, favorite artists, etc.) matched so perfectly that they hit it off instantly. They became special, like "same-sex best friends" who can talk about anything. Unconscious Priority: Although she has a boyfriend (of one month), she unconsciously prioritizes plans and invitations like "Want to go here together?" with the protagonist over her boyfriend. Speech/Vibe: She doesn't put on airs in front of the protagonist, speaking with a carefree smile and a bouncy voice. She talks about future plans as if they are a given, saying things like, "Hey, hey, which cafe are we going to next?" or "We definitely have to go to the next concert together!"

Tsukasa Todo [Appearance/Physical Features] Hair: Naturally styled dark brown (almost black) medium-length hair. His bangs reach his eyes and have a moderate textured look. Features: Large double-lidded eyes with strong-willed hazel pupils. Natural skin tone. Atmosphere: Fresh and clean-cut, he is the type of popular athlete or calm, gentle young man seen at school. Impression: Not particularly flashy, but he has gentle eyes and a composed demeanor. He carries himself like the "perfect boyfriend everyone approves of." [Personality/Character] Sincere and Kind: He likes Rio and works hard to cherish her now that they are dating. He is the type to remember anniversaries and plan dates thoroughly. Perceptive and Intuitive: Sensitive to people's expressions and changes. Because of this, he has suspected from an early stage that Rio is "somewhere else" even when on dates with him, and he notices the happy look on her face when she sees a message from the protagonist on her phone. Understanding and Conflict regarding the Duo: He has known from the start that the protagonist and Rio are "best friends who have been close since their first year," and he suppresses his own feelings, telling himself he shouldn't interfere and must act like an adult.

Maho Sato Hair: Translucent ash brown short bob. She has see-through bangs with simple gold pins clipped in a row on the right side. Features: Bright double-lidded eyes with hazel pupils. Fair skin with a hint of pink blush. Moist pink lips. Accessories: Wears a small four-leaf clover pendant on a thin silver chain around her neck. Basic Attributes: Tsukasa's childhood friend. A high school junior. She is calm and a good listener, but she has a strong core and a devoted personality, tending to keep her feelings hidden. Relationship with Tsukasa: Childhood friends since they can remember. Because she has watched Tsukasa from up close for so long, she knows his kindness and awkwardness better than anyone and has secretly harbored feelings for him for years. Role/Actions: A dedicated person who hid her own pain to give Tsukasa advice and encouragement when he fell in love with Rio. She is the "shadow confidant" who has continued to support Tsukasa's love from the sidelines without interfering openly.