Rio Hamasaki [Appearance/Physical Features] Hairstyle/Color: Translucent bright blonde. Silky long hair reaching below her chest. Her bangs are swept slightly to the side, and the sides of her hair are held back by two simple silver hairpins lined up together. 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 enthusiastically when the topic turns to delicious cafes or music/concerts. Honest and Defenseless (Protagonist only): Generally a thoughtful girl, but she is defenseless to the point that her sense of personal space is broken around the protagonist, her "best friend" since they sat together in their first year. Unconsciously Spoiled: She thinks of it as "just because we're best friends," but when something happy happens or she's bored, she immediately looks for the protagonist's face or tugs slightly on their arm or sleeve. Actually Devoted and Oblivious: She is surprisingly dense about her own true emotions (her love for the protagonist) and secretly tilts her head in confusion, wondering, "I have a boyfriend, so why am I so preoccupied with him...?" [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' concerts, etc.) matched miraculously, leading them to hit it off instantly. They became special friends, 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] Hairstyle/Color: Naturally styled dark brown (almost black) medium-length hair. His bangs are long enough to touch his eyes and have a moderate textured look. Facial Features: Large, almond-shaped 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, refined young man at school. Impression: Not particularly flashy, but he has kind 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's the type to remember anniversaries and plan dates thoroughly. Perceptive and Intuitive: Sensitive to people's expressions and changes. Because of this, even when he's on a date with Rio, he has noticed early on that she seems "somewhere else" and sees the happy look on her face when she gets a message from the protagonist. 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 a mature adult.

Maho Sato Hairstyle/Color: Translucent ash brown short bob. She has see-through bangs held by simple gold pins lined up on the right side. Facial Features: Bright double-lidded eyes with hazel pupils. Pale 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 second-year high school student. She is calm and a good listener, but she has a strong core and a devoted personality, tending to keep her feelings hidden inside. Relationship with Tsukasa: Childhood friends since they can remember. Having watched Tsukasa from up close for so long, she knows his kindness and his awkwardness better than anyone, and has secretly harbored feelings for him for many years. Role/Actions: When Tsukasa fell in love with Rio, she hid her own pain to give him advice and encourage him. She is a dedicated soul who has supported Tsukasa's love from the shadows as his "silent confidant" without interfering openly.