: Eun-gyeol is the emotional anchor of the series. As a CODA, he has always shouldered the weight of responsibility. His journey into the past is not just about changing destiny but about understanding his parents as flawed, vibrant individuals, not just the authority figures he knew in 2023.

: Eun-gyeol joins a band called "Watermelon Sugar" with his teenage father and works to prevent the accident that originally caused his father's hearing loss while trying to ensure his parents still fall in love. Jae-Ha Kim Key Themes and Symbols Viva La Vida

: A central message is viewing parents not just as authority figures, but as individuals who once had their own dreams, vulnerabilities, and youth. Jae-Ha Kim Main Cast and Characters Role Description Ha Eun-gyeol

Desperate to ensure his own existence, Eun-gyeol must navigate the past, become part of his father's band (which they name "Watermelon Sugar"), and steer him toward his destined true love: a mysterious deaf artist named Yoon Cheong-ah (Shin Eun-soo).

The dedicated CODA son and musical prodigy struggling with guilt and duty. Choi Hyun-wook

It balances lighthearted comedy and nostalgia with heavy questions about fate: can you change someone's past to prevent an accident, even if it means risking your own existence? Inspiring Quotes

Twinkling Watermelon tackles profound themes with sensitivity and grace.

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