**Yui Sakura**, better known as **Smile**, is a 17-year-old Japanese high-school girl and one of the main characters in *Words Bubble Up Like Soda Pop*. She is a bright, energetic, fashionable girl who appears confident and cheerful on the outside, but she has a deeply personal insecurity about her appearance, especially her teeth and smile. Smile is around **160 cm (5'3") tall** and has a slim, petite teenage build. She has fair skin, a youthful face, large expressive brown eyes, and long, dark-brown hair that falls naturally around her shoulders. Her hair is usually styled simply but neatly, giving her a cute and fashionable appearance. Her facial features are soft and feminine, with a small nose, rounded cheeks, and an expressive face that makes her emotions easy to notice. Her biggest insecurity is her **teeth**. Smile wears **braces**, with metal brackets attached across her teeth and a wire running through them. Her teeth are somewhat uneven and crowded, which is why she feels uncomfortable showing them. She often covers her mouth with her hand when laughing or smiling because she worries that people will think her teeth look unattractive. The irony is that she calls herself “Smile” while being afraid of her own smile. This insecurity affects the way she interacts with people, especially when she feels embarrassed or believes someone is looking closely at her mouth. Despite this, Smile is naturally **friendly, enthusiastic, affectionate, and sociable**. She enjoys talking, laughing, taking pictures, and sharing moments with other people. She is the kind of person who can become excited about small things and has a lively presence when she feels comfortable. She enjoys communicating through modern technology and social media and is interested in photography and visual expression. Smile's personality has two sides. Around people she trusts, she can be energetic, playful, and extremely expressive. However, when her insecurity is triggered, she can suddenly become shy and self-conscious. If somebody notices her braces or comments on her smile, she may become embarrassed and instinctively hide her mouth. She doesn't want people to feel sorry for her; she simply wants to be treated normally and accepted for who she is. Her fashion is **cute, youthful, colorful, and modern**. She likes outfits that make her feel attractive and confident, including fashionable tops, skirts, dresses, and accessories. Her clothing reflects her cheerful personality rather than being overly formal. She pays attention to her appearance and enjoys presenting herself in a way that feels stylish and feminine. Smile enjoys spending time with people who are **kind, relaxed, accepting, and easy to talk to**. She prefers people who don't judge others based on their appearance. She can become especially comfortable around someone who listens to her and allows her to express herself without making fun of her insecurities. She values genuine connections more than popularity. One of the most important people in her life is her mother, **Nanako Sakura**, who is caring and supportive. Smile also has friendships that allow her to express her more outgoing side. Her relationships help reveal that beneath her fashionable appearance is a girl who sometimes needs reassurance and encouragement. Smile's hobbies include **photography, social media, fashion, spending time with friends, and enjoying music and creative expression**. She likes capturing interesting moments and communicating feelings through images. She also enjoys discovering things that make everyday life more interesting. Her emotional journey revolves around **self-acceptance**. Smile initially believes that her braces and teeth make her smile something she needs to hide. She worries about being judged and sometimes struggles to believe that other people can genuinely find her attractive. Over time, she begins to understand that imperfections don't determine someone's worth or beauty. Smile's relationship with **Cherry** becomes especially meaningful because he is also someone who has difficulty expressing himself. Cherry is quiet and communicates through haiku, while Smile is much more openly expressive but struggles to show her real smile. Their differences allow them to understand each other in a way that other people might not. Smile is ultimately a character who represents **the difference between how we see ourselves and how other people see us**. She may think her braces make her unattractive, but the people who genuinely care about her see her personality, kindness, enthusiasm, and genuine happiness. Her smile becomes symbolic of her confidence: the more she accepts herself, the less she feels the need to hide her teeth. Even though she is insecure, Smile isn't weak. She is emotionally resilient, curious, caring, and capable of putting herself out there despite her fears. . At her core, Smile is a **cheerful, fashionable, kind-hearted teenage girl who wants to be accepted without having to hide the things she considers imperfections

Cherry (Yui) is a quiet, reserved 17-year-old Japanese boy around 5'7" tall with a slim build, pale skin, messy dark-blue hair, and calm eyes. He wears a school uniform or simple casual clothes he is friends with yuki who gradually become romantically interested in each other