Last Summer
🎬 Netflix · Viki
⭐ 7.2 / 10 MDL
🔞 15+
📋 Drama Overview
Viki
Twin brothers Baek Do-ha and Baek Do-young grow up on opposite sides of a divorce — Do-ha raised in the United States, returning to Korea for exactly 21 days each summer, and Do-young left behind in the neighborhood they once shared. During those brief annual visits, Do-ha quietly falls for their neighbor Song Ha-gyeong, a girl who watches him arrive every summer and leave every fall without ever saying what she actually feels. For years, this is their pattern: summer, then silence, then summer again.
Years later, all three are adults with careers, complications, and a secret no one has spoken aloud. Do-ha is now an architect in Seoul. Ha-gyeong works as a civil servant in the construction industry. And Seo Su-hyuk — a sharp appellate lawyer — enters their orbit in ways that reopen old wounds. When the final summer resurfaces through memory and confrontation, the three are forced to reckon with what actually happened, what they chose to protect each other from, and whether the people they became can make room for the love that was never fully expressed.
12 / 12 ✅ Completed
⚡ Quick Verdict
One box. Everything you need to decide.
· MDL Score · 4,570 ratings
▶ Official Trailer
🎭 Cast & Characters
The full cast of Last Summer (2025) — lead roles, supporting cast, and the characters they play.
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📺 Episode Guide
All 12 episodes of Last Summer (2025) — spoiler-light recaps with air dates.
🏁 Ending Explained
Full spoilers ahead — everything that happens in the finale and what it all means.
Spoiler Warning — This section covers the full finale of Last Summer. Stop here if you haven’t finished the series.
What the Brothers Were Actually Protecting. The secret at the center of Last Summer is a hiking accident — Do-young was involved in an incident that resulted in a death, something Do-ha knew about and covered for by leaving Korea and staying mostly absent. For years, both brothers carried their version of this separately: Do-young with guilt, Do-ha with the weight of complicity. Ha-gyeong, who was closer to the truth than either brother realized, had constructed a story around the gaps to protect herself from knowing. The finale begins by pulling all of this into the open — not with confrontation but with exhaustion, the kind that comes when people are simply too tired to keep a secret they never should have had.
The Confession That Matters Most. The romantic resolution between Do-ha and Ha-gyeong arrives in episode 12, and the show is smart enough not to frame it as a reward. It is not the moment two people finally get what they always wanted — it is the moment two people decide to stop making the past a reason not to try. Do-ha tells Ha-gyeong he loves her without a qualifier or an escape clause. She answers without her usual deflection. The confession is small in scale and enormous in implication: two people who spent years managing their feelings at careful distances finally choosing not to.
Do-young’s Resolution — and Su-hyuk’s Exit. Do-young’s arc ends in a place that is more healing than triumphant. The drama acknowledges that his story had fewer scenes and less space than it deserved, but what the finale does with him is right: he and Do-ha reconcile not through a single emotional climax but through several quieter moments of brothers just being in the same room without armor. Su-hyuk’s exit is handled with unusual grace for a second male lead — he is not humiliated or written off, but allowed to recognize his own situation honestly and step back without bitterness.
The Return. The final scene brings all three back to the old neighborhood — not to recreate the past but to demonstrate that the past no longer holds the same power over them. Do-ha is not there for 21 days this time. Ha-gyeong is not watching from a window. Do-young is not absent. The geography is the same; the people inside it have changed. Last Summer ends the way its best episodes felt: quietly, with warmth, and without insisting on more than the moment actually contains. Some stories end the way summer always does — not with an ending, but with the knowledge that another season is coming.
✍️ KDramaWorlds Editor’s Take
Our honest read on why this drama is worth your time — and who it’s for.
What Last Summer gets right — and gets right more consistently than its modest ratings suggest — is the specific texture of first love as adults look back at it. Lee Jae-wook plays both twins with enough distinction that you stop noticing the technical challenge and start just watching two different people. Do-ha is contained, precise, emotionally careful; Do-young is looser, wounded in ways he has never learned to name. The fact that both are played by the same actor never becomes a gimmick. More importantly, the drama understands that the love between Do-ha and Ha-gyeong was never fully articulated the first time around — and it takes that seriously as a story rather than using it as an excuse to delay a confession for twelve episodes. The pacing in the first half is patient without being slow, and the architectural details woven through the visual storytelling give the show a coherence that the script, at its best, earns.
The drama’s most divisive element — the love triangle — is also its most uneven. Su-hyuk is written well enough that the triangle has real tension, but the story takes several episodes longer than necessary to resolve what was always going to be a foregone conclusion. The female lead’s characterization also wobbles in the middle section: Ha-gyeong’s emotional inconsistency reads less like layered complexity and more like scripting convenience. These are not fatal problems — Twenty-Five Twenty-One had similar structural complaints and remains a beloved drama — but they explain why Last Summer’s audience was smaller than the cast’s profile would suggest. The drama asks for patience and does not always give you reasons to be patient in the chapters that need them most.
What redeems it, every time, is the finale’s emotional honesty. The show does not mistake a neat resolution for a true one. The brothers reconcile; they do not erase the distance. Ha-gyeong and Do-ha confess; they do not pretend the years between them cost nothing. Last Summer is a drama for people who remember that first love is not about innocence — it is about the version of yourself that existed before you learned to protect yourself from wanting things. If that sounds like something you need right now, you already know whether to watch it.
Lee Jae-wook fans — his range here is genuinely impressive
KBS2 weekend comfort drama at its most emotionally grounded
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