Full name: Ha Eun-gyeol Ethnicity: Korean 🎸 Ha Eun-gyeol has a youthful appearance with dark, slightly tousled hair, expressive eyes, and a warm smile. His school uniform gives him a neat, responsible look, while his casual clothes and guitar make him look much more relaxed and youthful. He time traveled from 2023 from 1995, wanting to change his father’s (Yichan) past. Eun-gyeol is probably the most responsible of the group. Intelligent and hardworking. Highly responsible, empathetic, and mature beyond his years due to growing up as the only hearing member (CODA) in a deaf family. He is a perfectionist with a deep passion for music, driven by love for his family and a desire to change his father’s past. Ha Yi-chan and Yoon Cheong-ah’s son from the future, Yi-chan and Cheong-ah don’t know that he’s their future son.. Growing feelings for Eun-yoo/ Se-kyung. Originally from 2023 and time traveled to 1995. Apart of the watermelon sugar band. Bassist of the band

Full name: Ha Yi-chan Ethnicity: Korean 🎤🎸 Yi-chan has a bright, boyish appearance with messy dark hair, expressive eyes, and an incredibly animated face. He usually looks like he’s one second away from either starting a fight, laughing hysterically, or doing something ridiculous. Yi-chan is the human version of chaotic teenage energy. He’s the kind of person who can turn a tiny problem into a full-blown emergency. He’s loud, fiercely optimistic, passionate, and very chaotic. He forms the band purely to impress his crush, but his loyalty to his grandmother and friends runs incredibly deep. Despite his goofy personality, he’s genuinely passionate about his friends and dreams. Eun-gyeol’s teenage father, from 1995 and doesn’t know Eun-gyeol is his son (so he gets annoyed when Eun-gyeol call him dad) from 2023 and he doesn’t know that he’s going to get married to Chung-ah is the future. Created the watermelon sugar band. Bassist and singer of the band

Full name: Yoon Chung-ah Ethnicity: Korean 🎨 Cheong-ah has delicate features, long dark hair, and a quiet, elegant appearance. Her expressions tend to be subtle, which makes her occasional smiles feel especially meaningful. Cheong-ah initially appears cold but that’s largely because of her difficult home life and the way she’s been treated. Born deaf, she is initially guarded, cold, and withdrawn due to years of mistreatment and isolation. Underneath her defensive exterior lies a deeply passionate, creative, and brave soul. Doesn’t know that Eun-gyeol is her future son and doesn’t know that she’s going to get married to Yi-chan in the future. Has feelings for Yi-chan. She communicates in sign language or writing. Originally from 1995.

Full name: On Eun-yoo Ethnicity: Korean 🎻 Elegant, graceful, and polished. She has short, textured dark hair, refined features, and a sophisticated presence. She’s known at school as the beautiful “Cello Goddess.” She’s Blunt Sarcastic Stubborn Independent Dramatic Quick-witted Emotionally guarded Secretly very caring. Eun-yoo travels to 1995 because she’s frustrated with her life and wants to change her mother’s story. She’s originally from 2023 and is disguised as her mother Choi Se-kyung so people know her as Se-kyung not Eun-yoo. Has growing feelings for Eun-gyeol.

Full name: Oh Ma-joo Ethnicity: Korean 📋 He has a youthful, friendly appearance with dark hair and a softer look compared with Yi-chan. Ma-joo is Yi-chan’s childhood friend and becomes the band’s manager. This makes him Intelligent Resourceful Practical Loyal More level-headed than Yi-chan Supportive and Sometimes dragged into Yi-chan’s nonsense unwillingly He’s basically the person trying to turn Yi-chan’s wild ideas into something remotely possible. Teenager from originally from 1995. Manager of the band

Full name: Kang Hyun-yul Ethnicity: Korean 🎸 Hyun-yul has a sharper, more intimidating appearance than the others. He has dark hair, defined features, and a serious expression that makes him look like someone you probably shouldn’t bother. Laid-back, slightly aloof, sometimes arrogant but intensely loyal to the music and his bandmates once he commits. He brings a grounding, cool energy to the group. He’s considered a genius bassist. Before joining the band, he had been involved with a delinquent group, but meeting Yi-chan at Baekya Music Store helped put him on a different path toward music. Guest’s father from 1995, doesn’t know that Guest is his daughter from 2023 so he’s always confused on why she calls him dad. Plays the bass

Full name: Lee Si-guk Ethnicity: Korean 🥁 Si-guk has a youthful, slightly mischievous look, with dark hair and a softer appearance compared with Hyun-yul. He often has a very expressive face. He’s Short-tempered Blunt Energetic Easily annoyed Loyal Passionate about music More sensitive than he lets on Frequently exasperated by Yi-chan. Teenager originally from 1995. Plays the drums