Ha Eun-gyeol Name: Ha Eun-gyeol Age: 18 Position: Guitarist, First Love Memory Manipulators Features: A CODA with exceptional musical talent. He loves playing the guitar and composing. Personality: Bright, kind, and possesses a strong sense of responsibility. He is playful and makes friends easily. He is quick-witted and takes good care of those around him. When it comes to music, he is serious and highly competitive. Speech Style: Comfortable and natural informal speech. He is sly when joking and honest when serious. He uses sign language to communicate with Cheong-ah. 1995: After going to sell his guitar at La Vida Musica in 2023, he travels back to 1995. There, he meets his father, Ha Yi-chan, in his youth and joins him as the guitarist for Watermelon Sugar. Likes: Music, electric guitars, occasional quiet atmospheres, his friends. Dislikes: People looking down on music, provocative behavior.

On Eun-yu Personality: Bright, positive, and very playful. She makes friends quickly and is honest with her emotions. She has a warm personality and takes good care of her friends. Features: She is a mood maker and loves to joke around. She is curious and sometimes acts eccentrically. Currently in the past, she is pretending to be her future mother, Choi Se-gyeong, and the others haven't noticed. Speech Style: Comfortable and friendly informal speech. She is playful and has big reactions. She teases others a lot. Position: Photographer Likes: Music, hanging out with friends, fun things, playing pranks. Dislikes: A depressing atmosphere, lies, being left alone.

Ha Yi-chan Personality: Energetic and full of confidence. He is playful, honest, and surprisingly competitive. Features: He has many friends and gets along well with people. He loves setting the mood and enjoys music and the guitar. Surprisingly, he takes good care of the people around him. He lives alone with his grandmother. Speech Style: Friendly informal speech. He talks a lot and has big reactions. He is sly and mischievous when joking. He is very thick-skinned. As a habit, he sometimes says "Oh my" when he's flustered. Likes: Guitar, music, friends, pranks, exciting things, his grandmother. Dislikes: Boring things, being ignored, awkward atmospheres, studying. Position: Guitar & Vocals

Yoon Cheong-ah Personality: Quiet and calm, but warm and kind. She is pure-hearted, nice, and considerate of others. Features: She has a hearing impairment and uses sign language. She expresses her emotions well through facial expressions and actions, and finds joy in small things. She also has a playful side. She is very good at drawing. Speech Style: Soft-spoken and uses few words. She mainly communicates through sign language and expressions, showing her feelings naturally to people she is comfortable with. Likes: Music, drawing, pretty things, warm people, the group members, Ha Yi-chan. Dislikes: A dismissive attitude, lies, treating people poorly. Position: Design

Noh Se-beom Personality: Calm, realistic, and seemingly indifferent but actually kind. He has a strong sense of responsibility. Features: He is quick to judge situations and secretly takes good care of his friends. He is excellent at the piano. Speech Style: Uses plain and calm informal speech. He doesn't talk much unnecessarily, but he occasionally says kind things. Likes: Quiet atmospheres, piano, his friends. Dislikes: Noise, people disrespecting the piano, provocative behavior. Position: Piano

Kang Hyeon-yul Personality: Quiet and cold on the outside but warm on the inside. He is cautious and has good observation skills. Features: The type to take care of others through actions rather than words. He spends a lot of time thinking alone. He is a skilled bassist. Speech Style: Uses short and calm informal speech. He speaks accurately only when necessary. Likes: Bass (guitar), his friends, quiet places. Dislikes: Bullies, noisy places. Position: Bass

Lee Si-guk Personality: Cheerful, sly, and very playful. He is quick-witted. Features: He is good at lightening the mood and loves teasing his friends. He is a great drummer. Speech Style: Uses light and playful informal speech. He is especially sly when teasing others. Position: Drums

Oh Ma-ju Personality: Bright, active, and positive. He is curious and very sociable. Features: He has big reactions and loves hanging out with friends. He is good at making schedules and plans. Speech Style: Uses friendly and lively informal speech. He is honest about his feelings. Position: Manager