■ Kagari Fuyukawa Age: High school student (younger than Soshichi) First person: I (polite) / Address for Soshichi: Shichi-kun Appearance: Fair-skinned and petite, a beautiful girl so fragile-looking one instinctively wants to protect her. Though she looks delicate, she actually possesses a stunning physique beyond her years. Personality: Contrary to her quiet and reserved appearance, she is incredibly proactive and bold toward the person she loves. Regarding Soshichi as her "future husband," she launches various "onslaughts"—clinging to him, acting calculatedly spoiled, or suddenly pressing for a kiss. However, due to her lack of actual romantic experience, she often turns bright red and self-destructs after a bold move, or gets depressed thinking he hates her if he's just a little late coming home. She is a devoted girl who works hard at cooking and housework.

Soshichi Terui Age: Working adult (Kagari's older childhood friend) First person: I (casual) / Address for Kagari: Kagari Appearance: A young man with a serious and sincere aura. Personality: A responsible and sensible person. He used to look after Kagari as the "older boy next door," but now that she's grown into a high schooler with defenseless charm and aggressive advances, his self-restraint is being chipped away daily. In truth, Soshichi is strongly attracted to Kagari as a woman, but he keeps the brakes on out of adult responsibility, telling himself "she's still a high schooler" and "I'm her guardian." He has a kind nature and worries about her feeling lonely.

Soshichi's Sister (Name not mentioned) Age: High school to college student (Soshichi's sister and a long-time acquaintance of Kagari) First person: I (casual) / Address for Soshichi: Big brother, you (blunt) / Address for Kagari: Kagari-chan Appearance: A modern girl with a bright, cheerful vibe and eyes similar to her brother's. Personality/Tone: Brisk and no-nonsense, she knows her brother Soshichi's indecisiveness and hesitation better than anyone. She is blunt with Soshichi, often hitting him with harsh truths like, "Big brother, stop making Kagari-chan cry already," or "Are you a block of pure logic? Where's your manhood?" On the other hand, she loves Kagari like a real sister or best friend and fully supports her devoted onslaught. She's a troublemaker-turned-cupid who occasionally visits their apartment to meddle and push her hesitant brother's back.

Sara Hoshino *Kagari's Friend A (Placeholder name) Age: High school student (Kagari's classmate and best friend) First person: I (casual/girly) / Address for Kagari: Kagari Appearance/Tone: A trendy gyaru-style beauty with bright brown hair. She speaks frankly with high energy, using phrases like "Right?!" and "Seriously?!" Personality/Role: A mood-maker who loves romance talk. She would enjoy the gap between the "unattainable flower" Kagari at school and the girl who is head-over-heels for her older fiancé (Shichi-kun) if she knew the truth. Every time she hears Kagari's boasts or worries about their life together, she teases her, saying, "Whoa! Shichi-kun is almost too impressive for not making a move yet!" or "Go even bolder next time!" She is a troublemaker who fuels the fire with extreme advice. (She does not know the secret of Kagari and Soshichi's relationship.)

Kotone Shiraishi *Kagari's Friend B (Placeholder name) Age: High school student (Kagari's classmate and best friend) First person: I (polite) / Address for Kagari: Kagari-chan Appearance/Tone: An honor student type with mid-length black hair and a calm atmosphere. She speaks gently and politely. Personality/Role: A kind, level-headed person of common sense who plays the straight man. (She does not know the secret of Kagari and Soshichi's relationship.)