Official poster for the Thai BL series The Last Lock of Love with the four lead actors in an office

The Last Lock of Love

On AirTV Series🇹🇭EP 3

What happens

Picture the most awkward first day at work imaginable. The Last Lock of Love (ล็อกสุดท้าย…คือนายคนเดียว) opens on one reckless night with a stranger, and soon after, that stranger walks into the office as the new manager. Uff. This Thai BL office romance from One by Chat Entertainment turns that awkward reunion into a full workplace rivalry.

Meet Chat (Nongchat Chatchai Peangapichart), a product developer who knows his department inside out. Then comes Seung-woo (Choi Seung-ho), the manager placed above him. The official logline sets them up as rivals on two fields at once, the workplace and the heart. Every meeting becomes a contest, and every contest carries the memory of that one night neither of them can mention out loud in front of colleagues.

The studio asks a cheeky question about the whole story: when one heart finally clicks into place, whose lock does it fit? The title plays with that image of a lock and the single key that opens it, and the promotional material keeps returning to it with little padlock symbols everywhere. Cute, and a tiny bit smug, in the best way.

Amid the competition there are relationships nobody can predict and feelings that refuse to stay under control, which is exactly the mess you want from an office romance. Neur Surathin Ngamcharoen and Ikkyu Wachirakiat Jaipa complete the main cast around the two leads. My tip: clear your Tuesday nights.

CONTENT DETAILS

Native Title
ล็อกสุดท้าย…คือนายคนเดียว
Original Title
The Last Lock of Love
Also Known As
ล็อกสุดท้าย…คือนายคนเดียว, Lock Love Series
Adaptation
Original series by One by Chat Entertainment.
Themes
Key Themes
Office RomanceWorkplace RivalryBoss and EmployeeHierarchyHidden PastCompetitionLock and Key
Country
Language
Thai
Seasons
1
Episodes
2 / 10
Aired Start
Release Year

Before You Watch

  • Premiere: episode 1 premiered on Tuesday 3 November 2026 at 22:30 Thailand time.
  • Where to watch: broadcast on Channel 3HD, with online viewing on iQIYI.
  • Studio: an original series by One by Chat Entertainment.
  • Crew: directed by Manassanun Su and produced by Piyawat Chaithiangthum.
  • Pilot: an official pilot went up on the studio’s YouTube channel months before the series began.

Reviewed by Renkaze

Okay, office romance lovers, gather round. The Last Lock of Love has the kind of setup that made me grin before a single episode had aired: a product developer, a brand new manager, and one night the two of them would very much like to forget. Spoiler for their first week together: they cannot.

A Rivalry With a Memory Attached

Nongchat Chatchai Peangapichart plays Chat, the developer who knows his department better than anyone, and Choi Seung-ho plays Seung-woo, the manager placed above him. The official logline has them competing in two arenas, the workplace and the heart, and that is my favourite kind of rivalry. Every argument about a product is secretly an argument about something else. You know exactly what I mean.

The casting crosses a border too. A Korean actor stepping into a Thai office drama as the new boss gives the opening episodes a built in sense of someone arriving from outside the room, and I am curious to see how the show plays with that.

Locks, Keys and a Lot of Padlocks

Here is the detail that won me over. The title never treats love as a lightning bolt. A lock is a mechanism, and you open it by trying, failing, adjusting and trying again. That is basically a job description for office rivals, which makes the metaphor smarter than a cute poster line. The Thai title adds the twist: the last lock is "you alone", so there was only ever one right key.

Small Studio, Big Slot

This is an original series from One by Chat Entertainment, directed by Manassanun Su and produced by Piyawat Chaithiangthum. It lands in a Tuesday 22:30 slot on Channel 3, with iQIYI carrying it online, and the studio warmed everyone up with an official pilot on its YouTube channel, then a teaser and a full trailer in the last days of October. Neur Surathin Ngamcharoen and Ikkyu Wachirakiat Jaipa round out the main cast.

What I Am Watching For

Episode 1 only landed on 3 November 2026, and I want a few more weeks with Lock before I score it. My tip: watch the first proper meeting between Chat and Seung-woo twice. Once for the dialogue, and once for everything the two of them are carefully not saying. I will be back once more of the run is out, padlock emoji in hand.

Themes and Messages

The title does a lot of homework. A lock is a mechanism, a little puzzle with exactly one right answer, and the Thai title insists that the last lock is "you alone". So the romance is framed as a fit waiting to be found, and the rivalry is the long, fiddly process of finding it. Try a key, fail, adjust, try again. Honestly, that is office life in a nutshell.

Then there is power. Chat holds the expertise and Seung-woo holds the job title above him, which puts knowledge and hierarchy in the same meeting room every single day. Add a private memory neither man can file away, and competition turns into a way of staying close. As long as they are fighting over the same project, neither of them has to admit why he keeps watching the other one. Uff, I see you two.

Did You Know?

  • The studio tags the drama as #LockLoveSeries, and its YouTube channel also carries a reality show called LOCK LOVE Game Reality, announced for Tuesdays at 22.30 from 22 September. Same weekday, same time as the drama. Spot the pattern?
  • The teaser and the full trailer landed within a week of the premiere, so the official countdown was short and sweet.
  • The English line in the trailer asks whose heart will finally open in the end, padlock emoji included, of course.

OFFICIAL TRAILER

Episode guide: The Last Lock of Love

2 / 10 episodes aired · EP 3
EP 1
03 Nov 2026
Aired
EP 2
10 Nov 2026
Aired
EP 3
17 Nov 2026
Upcoming
EP 4
24 Nov 2026
Upcoming
EP 5
01 Dec 2026
Upcoming
EP 6
08 Dec 2026
Upcoming
EP 7
15 Dec 2026
Upcoming
EP 8
22 Dec 2026
Upcoming
EP 9
29 Dec 2026
Upcoming
EP 10
05 Jan 2027
Upcoming

FREQUENTLY ASKED QUESTIONS

Is Choi Seung-ho a Thai actor?

No. He is a Korean actor, credited in Hangul as 최승호 in the official trailer, and he plays the manager Seung-woo opposite Chat.

What does the Thai title mean?

ล็อกสุดท้าย…คือนายคนเดียว reads roughly as "the last lock is you alone", so the English and Thai titles share the same lock and key image.

Who else appears in the cast?

Siriam Phakdidamrongrit plays Ann and Ameena Pinij plays Mo, with Eclair Juepak among the supporting cast.

Was there a blessing ceremony before filming?

Yes. The team held it at Wat Samrong Nuea in Samut Prakan, and the studio posted a short video of the day on its YouTube channel.

Where can I see the trailer?

On the Onebychat Entertainment YouTube channel, which released an official teaser on 28 October 2026 and a full trailer two days later.

Where a title can be watched, and who is credited on it, may have changed since publication, as our disclaimer explains. Broadcast details for a series still on air may change.

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