The Interest of Love

The essentials — before you press play.

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The Interest of Love

사랑의 이해 (Sarangui Ihae) · 2022 · South Korea

WriterLee Hyun-jung, Lee Seo-hyun

DirectorJo Yeong-min

Episodes16 eps · ~76 min each

Where to Watch✅ Netflix

⏱️

Binge Time20h 16m

AiredDec 21, 2022 – Feb 9, 2023

GenreRomance · Life · Drama

Content Rating15+

NetflixViu

Workplace RomanceLove SquareMelodramaBank SettingSlow BurnClass Differences

The TL;DR, boxed and ready.

Four coworkers, one bank branch, and every possible way to almost say the right thing.

Yoo Yeon-seok

Ha Sang-su

Lead

Mun Ka-young

Ahn Su-yeong

Lead

Keum Sae-rok

Park Mi-gyeong

Supporting

Jung Ga-ram

Jeong Jong-hyeon

Supporting

Moon Tae-yu

So Gyeong-pil

Supporting

Jeong Jae-seong

Yuk Si-gyeong

Supporting

Lee Hwa-ryong

Noh Tae-pyeong

Supporting

Park Hyoung-soo

Lee Gu-il

Supporting

Lee Si-hoon

Ma Du-sik

Supporting

Yang Jo-a

Seo Min-hui

Supporting

Jo In

Bae Eun-jeong

Supporting

Oh Dong-min

Yang Seok-hyeon

Supporting

Enough per episode to jog your memory, nothing more.

EP 01

Undefined Relationships

Dec 21, 2022

Sang-su and Su-yeong’s chemistry is obvious from their first work trip together, which makes what happens next sting more than a typical rejection would. She turns down his attempt to define things — not because she doesn’t feel it, but because she’s already seeing someone, bank security guard Jong-hyeon. The show spends its opening hour less on the spark between its leads than on the quiet class gap running underneath it, and that gap turns out to matter more than the crush.

EP 02

The Watcher at the Window

Dec 22, 2022

The awkwardness between Sang-su and Su-yeong curdles into office gossip, most of it aimed squarely at her. Enter Park Mi-gyeong — wealthy, confident, and instantly drawn to Sang-su in a way the whole branch notices. Sang-su, stewing over what he saw, shows up at Su-yeong’s place uninvited and watches Jong-hyeon embrace her through the window — a small, ugly moment of jealousy the show doesn’t excuse him for.

EP 03

What She Saw You Hesitate

Dec 28, 2022

Jong-hyeon’s steady, unglamorous devotion to Su-yeong starts to look like exactly what she needs, especially against a family history she’s still working through — a dead younger brother, parents she can’t quite forgive. Mi-gyeong, meanwhile, doesn’t so much pursue Sang-su as assume him, and the bank starts treating them like a matched pair before either one has said so. When Sang-su finally asks Su-yeong why she’s been cold, her answer reveals just how closely she’d been watching him hesitate.

EP 04

The Quiet Machinery of Privilege

Dec 29, 2022

Class keeps surfacing in small, specific ways this episode — a painting Mi-gyeong dismisses that Su-yeong actually loves, a project Su-yeong built that gets quietly reassigned to Mi-gyeong instead. None of it is framed as villainy exactly, just the ordinary machinery of privilege moving certain people forward without anyone raising their voice. Sang-su and Su-yeong’s simmering tension finally boils over on a work trip, and neither of them says anything they can easily walk back.

EP 05

Somewhere Steady to Stand

Jan 4, 2023

Su-yeong pushes back against a superior who’s made her uncomfortable and gets punished for it with degrading busywork — the kind of retaliation that never shows up on paper as retaliation. She refuses Sang-su’s help on principle, which costs her comfort but not her spine. In the same episode, Jong-hyeon finally asks to make things official, and Su-yeong says yes — not quite out of certainty, but out of wanting somewhere steady to stand.

EP 06

Locked In

Jan 5, 2023

A night locked inside the bank forces Sang-su and Su-yeong into the honest conversation they’ve been avoiding for five episodes, and it changes nothing about their circumstances while changing everything about what they now understand. She tells him, more or less, to go find happiness with someone else. He does — agreeing to date Mi-gyeong on terms even he admits aren’t quite fair to her. Jong-hyeon, for his part, ends things with Su-yeong over the phone, offering barely any explanation at all.

EP 07

Not Enough, By His Own Verdict

Jan 11, 2023

Su-yeong corners Jong-hyeon for real answers and gets them: a collapsed father, a failed police exam, a man who’s decided he’s not enough for her rather than risk finding out he’s right. She refuses to let him quit on himself, which is its own kind of love even if it isn’t the kind either of them wanted. Across town, Sang-su and Mi-gyeong go public, and a birthday party that puts both couples in the same room makes the unspoken tension between Sang-su and Su-yeong very hard to ignore.

EP 08

The Ambiguous Hotel Room

Jan 12, 2023

Su-yeong and Jong-hyeon try living together, but his insistence on keeping the relationship secret at work adds a strain neither of them names out loud. Sang-su opens up to Mi-gyeong about his past while his attention keeps drifting somewhere else entirely. A wedding puts both couples in the same room again, and this time the show doesn’t cut away from the look Sang-su and Su-yeong share across it — nor from the ambiguous hotel-room ending that follows.

EP 09

Red Flags

Jan 18, 2023

A flash-forward to a miserable future marriage between Sang-su and Mi-gyeong lands like a warning shot before the episode even properly starts. Mi-gyeong’s suspicion sharpens into real evidence once she finds a note about Su-yeong among Sang-su’s things, and her interrogation of Su-yeong is handled with an icy calm that says more than panic would. Jong-hyeon fails his police exam again and spirals, while Sang-su learns the real story behind Mi-gyeong’s guardedness — a first love who cheated, and a trust she never fully rebuilt.

EP 10

The Kiss at the Ice Rink

Jan 19, 2023

Mi-gyeong’s anxiety curdles into something closer to control — marriage talk, a meeting with her parents, a not-so-subtle claim staked in front of Su-yeong. Jong-hyeon, drowning in his father’s hospital bills and his own sense of inadequacy, moves out rather than keep leaning on Su-yeong. At a train station, Sang-su finally asks the question everyone’s been circling for nine episodes, and gets an answer in the form of a kiss neither of them can take back.

EP 11

No Regrets

Jan 25, 2023

Su-yeong tries to write the kiss off as a mistake; Sang-su flatly refuses to let her. A drinking game turns confessional, and for the first time she says the thing she’s been avoiding since episode one. Mi-gyeong senses the shift and tries to outrun it, but a birthday dinner she engineers herself becomes the setting for her own breakup — Sang-su finally, decisively, ends it. Jong-hyeon, still supporting Su-yeong through his father’s surgery, confronts her about feelings she can no longer fully deny.

EP 12

The Sandcastle

Jan 26, 2023

Mi-gyeong’s grief curdles into disbelief, then into pointed questions Sang-su can’t answer comfortably. Su-yeong, cornered by Jong-hyeon’s suspicion, offers her own bleak metaphor for why she keeps sabotaging good things before they can be taken from her — better to knock down the sandcastle yourself. Rather than face any of it directly, she volunteers for a three-month transfer to a different branch, choosing distance over confrontation one more time.

EP 13

The Fabricated Affair

Feb 1, 2023

Su-yeong’s self-sabotage reaches its ugliest point: a fabricated one-night stand with Kyung-pil, engineered specifically to give Jong-hyeon a clean reason to hate her and give Sang-su a reason to walk away. It works, in the sense that it detonates everything — Jong-hyeon humiliated and furious, Sang-su disbelieving and then devastated. Even Mi-gyeong, hospitalized from the stress of her own breakup, gets an honest apology from Sang-su that neither of them seems to fully believe will fix anything.

EP 14

Gone Without a Trace

Feb 2, 2023

Sang-su refuses to accept the story Su-yeong is selling, which frustrates her more than his anger would. Mi-gyeong finally gets her closure, an apology that lands as sincere rather than performative, and a farewell where Su-yeong calls her ‘sister’ with something like real affection. Then Su-yeong does the thing the whole season has been building toward: she skips her new posting entirely, quits the bank, and disappears without telling anyone where she’s gone.

EP 15

What Kyung-pil’s Recording Said

Feb 8, 2023

Sang-su searches for Su-yeong with the kind of stubbornness that would read as unhealthy in a lesser show, and the drama is careful to make his patience feel earned rather than obsessive. A recording from Kyung-pil finally reveals what she actually said that night — and it isn’t what Jong-hyeon assumed. The search leads to Tongyeong, where Su-yeong learns the truth about her parents’ marriage and finally understands where her own fear of love actually came from.

EP 16

Future Happiness

Feb 9, 2023

Four years pass. Sang-su has moved up at the bank and mostly moved on, or told himself he has. A wedding reunites the old KCU circle, and Su-yeong — now running a cafe called Future Happiness — has her own quiet reckoning with Mi-gyeong, one built on understanding instead of resentment. Sang-su finds her by accident, recognizes her paintings before he recognizes her, and the show ends the only way it could: with a conversation, a question about whether they were ever really in love, and no promise about what happens next.

Full spoilers — breaking down the finale and what it means.

What actually happened Four years after Su-yeong vanishes from the bank without a word, Sang-su stumbles onto her cafe by accident — he recognizes her paintings on the wall before he recognizes her. They talk. It’s warm, unresolved, and genuinely uncertain: the show ends on the two of them walking together, asking each other whether what they had was really love, without either one answering definitively. Jong-hyeon has become the police officer he always wanted to be; Mi-gyeong has made peace with the past well enough to attend the wedding that reunites everyone. Nobody gets a wedding of their own on screen.

An ending built to be argued about That’s not an oversight. It’s the whole point.

Why the finale refuses to commit The Interest of Love spends sixteen episodes arguing that most people don’t actually know what they want from love until they’ve already ruined it once — Su-yeong sabotages the relationship with Sang-su before it can properly start, and only understands why after four years of distance and a hard truth about her own parents’ marriage. Ending the show with a confirmed reunion would undercut that argument by suggesting growth is only worth something if it leads back to the same person. Ending it with total separation would undercut it just as badly, implying the growth didn’t matter at all.

The open question So the show splits the difference, and leaves it to the audience to decide whether ‘were we really in love?’ is a question two healed people ask on their way back together, or on their way to becoming something calmer and more honest instead — just not a couple.

The KDW verdict The strongest reading treats the ambiguity as earned rather than evasive: Sang-su and Su-yeong spend the whole series colliding because of what they don’t say, and the finale finally gives them a conversation with nothing left unsaid — which is its own kind of resolution, whether or not it ends in a relationship. The Interest of Love was never really asking who ends up with whom. It was asking what it actually costs to stop running from the person who sees you clearly, and by the last scene, at least one of its characters has finally stopped.