Twinkling Watermelon (2023) official poster
📺 K-Drama Guide · Romance · Fantasy · Coming-of-Age

Twinkling Watermelon

반짝이는 워터멜론 · 2023
✅ Completed · 16 eps
🎬 Viki · VIU · Netflix
⭐ 9.2 / 10 MDL
🔞 15+
⚡ Updated · Apr 4, 2026

📋 Drama Overview

Everything you need to know before you hit play.

Twinkling Watermelon (2023) official poster
Completed
🔥 2023 Best Drama
Twinkling Watermelon
반짝이는 워터멜론 (Banjjagineun Woteomellon) · 2023 · South Korea
WriterJin Soo-wan
DirectorSon Jeong-hyeon, Yoo Beom-sang
Episodes16 eps · ~70 min each
⏱️ Binge Time18h 40m
AiredSep 25 – Nov 14, 2023
GenreRomance · Fantasy · Coming-of-Age
Content Rating15+ · Teens 15 or Older

tvN
Viki
VIU
Netflix
Time Travel
Coming-of-Age
Music
Father & Son
CODA
First Love
Nostalgia

Ha Eun-gyeol (Ryeoun) is the only hearing person in a household of deaf adults — a model student who secretly moonlights as a guitarist in Hongdae. When his father discovers his double life, the argument that follows sends Eun-gyeol through a mysterious music shop and back to 1995. There, he finds his teenage father Ha Yi-chan (Choi Hyun-wook): loud, hot-headed, and completely deaf to the fact that the stranger claiming to be his son is absolutely telling the truth. Worse still, Yi-chan is infatuated with the cool and elegant cellist Choi Se-kyung — not Eun-gyeol’s mother Chung-ah. The mission becomes clear: keep his father alive, steer him toward the right girl, and don’t fall in love with someone who might not exist in his timeline.

What starts as a playful fish-out-of-water premise deepens steadily into something richer. Eun-gyeol forms a band called Watermelon Sugar with the misfits of 1995, each with their own weight to carry. The drama earns its emotional peaks honestly — through accumulated small moments rather than dramatic shortcuts. For a show about time travel, it’s surprisingly unconcerned with paradoxes. It’s much more interested in the question of whether understanding your parents as people changes the way you love them.

Episode Progress
16 / 16 ✅ Completed

▶ Official Trailer

🎭 Cast & Characters

Twelve performances across two timelines — the band that changed everything, and the family they became.

Ryeoun as Ha Eun-gyeol in Twinkling Watermelon (2023)
Ryeoun
Ha Eun-gyeol

Lead

Choi Hyun-wook as Ha Yi-chan in Twinkling Watermelon (2023)
Choi Hyun-wook
Ha Yi-chan

Lead

Seol In-ah as Choi Se-kyung / On Eun-yoo in Twinkling Watermelon (2023)
Seol In-ah
Se-kyung / Eun-yoo

Lead

Shin Eun-soo as Yoon Chung-ah in Twinkling Watermelon (2023)
Shin Eun-soo
Yoon Chung-ah

Lead

Choi Won-young as adult Ha Yi-chan in Twinkling Watermelon (2023)
Choi Won-young
Adult Ha Yi-chan

Supporting

Seo Young-hee as adult Yoon Chung-ah in Twinkling Watermelon (2023)
Seo Young-hee
Adult Chung-ah

Supporting

Bong Jae-hyun as Ha Eun-ho in Twinkling Watermelon (2023)
Bong Jae-hyun
Ha Eun-ho

Supporting

Cheon Ho-jin as Grandpa Viva in Twinkling Watermelon (2023)
Cheon Ho-jin
Grandpa Viva

Supporting

Goh Doo-shim as Go Yang-hee in Twinkling Watermelon (2023)
Goh Doo-shim
Go Yang-hee

Supporting

Kim Joo-ryoung as Lim Ji-mi in Twinkling Watermelon (2023)
Kim Joo-ryoung
Lim Ji-mi

Villain

Ahn Do-gyu as Oh Ma-joo in Twinkling Watermelon (2023)
Ahn Do-gyu
Oh Ma-joo

Supporting

Yoon Jae-chan as Kang Hyun-yul in Twinkling Watermelon (2023)
Yoon Jae-chan
Kang Hyun-yul

Supporting

🍿 Where to Watch

Stream Twinkling Watermelon on these platforms.

📺 Episode Guide

Spoiler-light recaps — enough to remember where you left off, nothing that ruins the ride.

Twinkling Watermelon Episode 1 — Passion Is Born
EP 01
Passion Is Born
September 25, 2023
Eun-gyeol’s double life gets established fast — model student by day, secret guitarist by night, interpreter for a deaf family he loves and quietly resents at once. The opening does the work of grounding what this drama is really about before it pulls the time-travel lever. Ryeoun’s physicality communicates everything the script doesn’t need to say.

Twinkling Watermelon Episode 2 — Eun-gyeol Quits Music
EP 02
Eun-gyeol Quits Music
September 26, 2023
The fight with his father that reshapes everything — and then the music shop. The show earns its premise before it uses it: by the time Eun-gyeol walks through that door, we already understand what he’d be giving up. The transition to 1995 is handled with just enough strangeness to feel magical rather than mechanical.

Twinkling Watermelon Episode 3 — Seoul 1995
EP 03
Seoul 1995
October 2, 2023
Eun-gyeol’s first full episode in the past — and the first real look at teenage Yi-chan. Choi Hyun-wook plays him with a cartoon-ish energy that somehow works: reckless, big-hearted, completely in over his head. The dramatic irony of a son watching his oblivious father fumble through life is the engine the show runs on, and it starts here.

Twinkling Watermelon Episode 4 — Eun-gyeol Becomes Yi-chan's Tutor
EP 04
Eun-gyeol Becomes Yi-chan’s Tutor
October 3, 2023
Eun-gyeol maneuvers himself into Yi-chan’s daily life as a math tutor — the most plausible cover he can manage. Yi-chan meets Chung-ah for the first time, and she barely registers him. Shin Eun-soo plays Chung-ah’s silence with a precision that says more than a page of dialogue would. The show’s second romance starts to take shape here, quieter and more interesting than the first.

Twinkling Watermelon Episode 5 — The Band Begins
EP 05
The Band Begins
October 9, 2023
Watermelon Sugar officially forms — and Eun-gyeol’s scheme to keep Yi-chan close by teaching him guitar starts to feel less like manipulation and more like something genuine. The scenes between father and son in this episode carry a warmth that catches you off guard. Keeping someone safe by becoming their student is a better premise than the show gives itself credit for.

Twinkling Watermelon Episode 6 — The Other Time Traveler
EP 06
The Other Time Traveler
October 10, 2023
The mystery around Se-kyung’s personality shift resolves — and it’s the twist the show has been teasing since episode three. Seol In-ah gets to play two distinct people in the same body, and she handles the tonal shift with surprising control. Eun-gyeol ends up in the hospital after an accident, briefly returning to 2023 and adding a new layer of urgency to his mission.

Twinkling Watermelon Episode 7 — Back to 1995
EP 07
Back to 1995
October 16, 2023
Eun-gyeol wakes in what he thinks is his own timeline — but the details are slightly off. The episode uses the ambiguity well, refusing to let either the audience or its lead character get comfortable with any version of reality. Eun-yoo’s mission becomes clearer, and the two future-kids are now circling each other with a mutual suspicion that reads very much like the beginning of something else.

Twinkling Watermelon Episode 8 — I Found Ha Eun-gyeol
EP 08
I Found Ha Eun-gyeol
October 17, 2023
Yi-chan comes looking — and the band performs to bring Eun-gyeol back to them. The scene lands harder than it should, partly because Choi Hyun-wook plays Yi-chan’s apology like someone who has genuinely never apologized before and isn’t sure his body knows how. Eun-gyeol agrees to rejoin on one condition: Yi-chan has to give up Se-kyung. The jealousy triangles now have a purpose.

Twinkling Watermelon Episode 9 — Friendship or Love?
EP 09
Friendship or Love?
October 23, 2023
Eun-gyeol’s love confession to Se-kyung lands in the middle of a schoolyard, and Yi-chan’s immediate response is a punch. The scene plays as comedy but the emotional stakes underneath it are real — a son trying to redirect his father’s heart while accidentally redirecting his own. Eun-gyeol also learns a secret about Chung-ah that reframes everything he thought he understood about her distance.

Twinkling Watermelon Episode 10 — Let Yourself Twinkle
EP 10
Let Yourself Twinkle
October 24, 2023
Eun-gyeol kisses Se-kyung and can’t take it back. Chung-ah’s stepmother moves to cut off the sign language lessons, and Eun-gyeol realizes the family situation is worse than he knew. The band renames themselves and changes their concept for the festival — the creative pivot feels earned because the show has spent enough time on the friendship inside it. A helper has been sent. Eun-gyeol doesn’t know who it is yet.

Twinkling Watermelon Episode 11 — Dangerous Rehearsal
EP 11
Dangerous Rehearsal
October 30, 2023
The festival is close and Eun-gyeol is running out of time. He’s identified the accident and is trying to keep Yi-chan away from it — but Yi-chan won’t listen, because he never does. Eun-yoo, meanwhile, is closing in on who her mother’s real first love was. Episode 11 is the show’s tightest hour of tension, the balance between comedy and dread finally landing exactly right.

Twinkling Watermelon Episode 12 — The Day of Decision
EP 12
The Day of Decision
October 31, 2023
Eun-gyeol cancels the rehearsal and the immediate crisis passes — but nothing is resolved. The festival day arrives, and Se-kyung (Eun-yoo) has to choose between staying loyal to her mission and following what she actually feels. Chung-ah decides not to show up. The episode does the rare thing of making its secondary romance hurt more than the primary one.

Twinkling Watermelon Episode 13 — The Final Festival
EP 13
The Final Festival
November 6, 2023
The festival performance — and after it, the band doesn’t disband. The show makes a quiet argument here for why friendship survives the end of shared goals, and it makes it through music rather than a speech. Eun-gyeol and Eun-yoo acknowledge what they are to each other. Yi-chan starts writing a song to convince Chung-ah to come back.

Twinkling Watermelon Episode 14 — Another Time Traveler
EP 14
Another Time Traveler
November 7, 2023
The most emotionally dense episode of the run. Eun-gyeol and Eun-yoo finally lay all their cards on the table — two people from different timelines who ended up in the same impossible situation. The revelation that Chung-ah has been confined and abused for twelve years reframes every scene with her. The accident, it turns out, hasn’t happened yet.

Twinkling Watermelon Episode 15 — The Hints
EP 15
The Hints
November 13, 2023
Eun-yoo drops what she knows and what she doesn’t — a precise, careful performance from Seol In-ah who has been playing a character with more information than anyone else in the room for most of the show. Yi-chan promises to stay home. Eun-gyeol and Eun-yoo investigate. The drama earns its penultimate episode by refusing to let either its leads or its audience relax.

Twinkling Watermelon Episode 16 — Everything You Hoped for and More
EP 16
Everything You Hoped for and More
November 14, 2023
Yi-chan is hit by the car anyway — and loses his hearing. Eun-gyeol refuses to leave. The finale delivers on everything the show promised emotionally, even as it rushes through the final timeline stitching. What it gets absolutely right: Yi-chan doesn’t stop. He keeps playing, keeps living, keeps teaching himself to love a life that looks different than he planned. Eun-gyeol comes home to a father who chose music in spite of everything. That’s enough.

✍️ KDramaWorlds Editor’s Take

Our honest read on why this drama is worth your time — and who it’s for.

🎸 Music at Its Core
👨‍👦 Father & Son
🌀 90s Nostalgia
💛 Warm & Healing
🕰️ Time Travel Done Right

The title sounds whimsical and the premise sounds lightweight — a boy goes back in time to play matchmaker for his parents — but *Twinkling Watermelon* earns its reputation through accumulation rather than spectacle. What it’s actually doing is asking a question that very few K-dramas bother with: what would it feel like to discover that your parents were once as lost and scared and hopeful as you are? Ryeoun plays Eun-gyeol with a self-awareness that makes him instantly compelling, and Choi Hyun-wook plays teenage Yi-chan with the kind of committed physical comedy that hides genuine depth underneath it. Their dynamic — a son protecting a father who doesn’t know he needs saving — is the drama’s strongest throughline, and it earns every tear it asks for.

Twinkling Watermelon (2023) — cinematic still

The time-travel mechanics will frustrate viewers looking for logical consistency — the rules are established loosely and the finale makes some choices that prioritize emotional payoff over internal coherence. Whether that’s a problem depends on what you’re watching for. If the plot machinery matters to you, the last two episodes will feel rushed and slightly messy. If you’re watching for the feeling of two people having their hearts quietly broken and remade across a thirty-year gap, *Twinkling Watermelon* does that better than almost anything from its year. The Chung-ah and Yi-chan courtship — patient, aching, built on sign language and small kindnesses — is the most quietly moving romance of 2023.

The show crests somewhere around episodes 11 and 12 and the finale doesn’t quite land with the weight the setup deserves. Endings that skip the aftermath in favor of a flash-forward to prosperity are a K-drama habit, and this one falls into it. But Choi Hyun-wook’s final scene — an adult Yi-chan still choosing music, still playing despite everything — is the kind of payoff that stays with you. The drama’s thesis is that a life doesn’t have to go according to plan to twinkle. It makes its case. Not perfect. One of 2023’s best.

👍👍👍 BEST FOR 👍👍👍
🎸 Fans of *Twenty-Five Twenty-One* or *Reply 1988* looking for a similar nostalgic warmth
👨‍👦 Anyone who’s ever wondered what their parents were like before they became parents
🎵 Viewers who want music woven into the story, not just playing over it

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