All language subtitles for Boy, with Caution (2026) Episode 1

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Original subtitles

(Ryu Seil)

(Ha Junghoon)

(Lee Jungchan)

(Jeong Siwan)

(Boy, with Caution)

Okay, that's about all I want to ask.

You said you can start working tomorrow, right?

Yes.

(Experience: Seojin High School, contract teacher; Nakwon High School, contract teacher; Saebit High School, contract teacher; Cheongga High School, contract teacher)

You should have other schools to choose from. (Experience: Seojin High School, contract teacher; Nakwon High School, contract teacher; Saebit High School, contract teacher; Cheongga High School, contract teacher)

Why did you come back to us?

Here's the final question:

in your opinion, would you think you're what you'd think is a good teacher?

I used to think so.

This is the staff restroom.

Are you a teacher?

Not yet.

You're a senior, right?

Did you mistake this for the nurse's office?

I didn't.

I know.

But you'd better go and get that checked.

See you around.

(Lee Hyunjae)

(Boy, with Caution) (Episode 1)

(Mom)

(When you want to be honest, come to Random Chat and chat freely!)

Son, you're back.

What are you so busy with? I can't even reach you.

-Why didn't you answer the phone? -Jiyoung and I ate first after waiting for you.

-When did you arrive? -30 minutes ago.

Did you drink?

Yes, I drank a little because of you.

No matter what, you have to remember to celebrate your wife's birthday.

Oh, seeing you in a suit, I thought you'd bring flowers back.

I had an interview.

I forgot.

Sorry.

What interview?

Another contract job, right?

How long do you plan to do contract jobs?

It makes it seem like you have some flaw.

Son, she just didn't say it out loud.

Jiyoung must be so worried about you.

My income is not bad anyway.

It's fine.

Mom, well...

If I don't answer the phone in the future, don't come.

-We... -Mom.

Serve me some more soup.

Okay.

(Random Chat)

Go back.

If my mom asks you to drink in the future, just decline.

Don't you dislike the smell?

You came to get this, right?

What future do we have?

"When you want to be honest"

and "When you want to confide in someone"—

which of these two is better?

"When you want to be honest."

Right?

The advertisers just have no taste.

I've told them so many times that this one is better.

Did you call a designated driver? Yeah.

I just did.

How long do you plan to hide it from your mom?

Since you're being so obvious about it,

you might as well tell her sooner.

Don't do it when I'm around.

Didn't you take off your ring?

Are you a teacher?

Not yet.

(Lee Hyunjae)

You're a senior, right? (Lee Hyunjae)

I probably left it when I went for the interview.

Did you decide to work there?

When do you start?

Tomorrow.

Which school?

Nakwon High School.

Did they ask you... to go there?

My driver probably can't find their way.

I'm leaving.

Jiyoung.

Stay the night and leave tomorrow.

Wouldn't you be uncomfortable with me here?

Just have a good sleep.

Go back.

Hello, driver.

I'm at the entrance of Building 303.

I'll come to you.

(Create a nickname)

(Regret)

(Nickname created) (Nice to meet you! Regret, would you like to start a new chat?)

(Yes)

(Sunflower: Why is your nickname Regret?)

Why is your nickname Regret? (Sunflower: Why is your nickname Regret?)

Well...

I couldn't think of any other words.

The first semester of senior year is almost over

but we have a new contract staff.

How long will he take to get the hang of it?

And he's a fixed-term contract teacher.

By the way, is Ms. Kim Haesook very sick?

She's a senior homeroom teacher.

I don't know either.

I don't know how this sounds.

This is Mr. Jang Kiwoo, who is substituting for Ms. Kim Haesook.

Nice to meet you.

I feel regret for my situation.

(Jang Kiwoo) I feel regret for my situation.

(Jang Kiwoo)

Please take good care of me for the remaining time.

I'm going to start roll call.

Shin Jaehak. Here.

Lee Jiyun. Here.

Lee Hyunjae.

Lee Hyunjae?

Can anyone contact Hyunjae?

Next. Joo Youngji.

Here.

If you call with your cell phone, they might answer—

though I don't know who you're calling.

No one answers a landline number these days.

Communication has all been moved over to KakaoTalk.

Ah, that's the college application form.

A student in our class took the seniors' by mistake.

Ah, okay.

(Nakwon High School College Application Form)

(Nakwon High School College Application Form) (Lee Hyunjae)

Mr. Choi.

If the parents' contact information section is blank,

How should I handle it?

It's my first time seeing this.

It's Lee Hyunjae, right?

You were calling Hyunjae just now?

We don't need to worry about his college application.

He'll probably go study abroad.

His background is so strong.

Background?

Yeah.

The chairman's son.

You seem to be past the years of caring for students.

It's not like that.

Then are you trying to score some points with the chairman?

Even if he leaves early without saying a word,

just treat it as he came to school.

Maybe his family background is too strong.

They don't allow any flaws on their child.

Time is passing so slowly today.

We should go eat lunch, right?

Okay, let's go.

Ah. Do you want to eat lunch with us?

I'm good.

I have plans.

You're busy.

Let's go. Let's go.

How regretful indeed—

(How regretful indeed— that no one is having lunch with you.) How regretful indeed— (How regretful indeed— that no one is having lunch with you.)

that no one is having lunch with you. (How regretful indeed— that no one is having lunch with you.)

(Lee Hyunjae)

I always run into you in weird places.

Are you a teacher now?

Yeah,

your homeroom teacher.

You didn't go to the nurse's office last time, did you?

I did.

Actually, I didn't need to go to the nurse's office.

It's boring, isn't it?

Going to school at your age.

You skip classes whenever you want.

It's not like that.

Then what is it?

You don't have to worry about me.

Why?

Because you're the chairman's son?

Yes.

I'll take care of myself. You don't have to worry about me.

Then...

don't make me worry.

I mean, take care of yourself,

just like you said.

Bro.

It's your turn

to take graduation photos.

I'm not going to take one.

It's compulsory.

You didn't see anyone else, did you?

Like Kim Jungha.

Who's that?

(Kim Jungha)

Did Youngmoon send you?

Where did he buy that drug?

Can you tell me?

How would I know?

Just once.

Just tell me the name.

I'll buy it myself.

Wow, look at that fucking restrained look.

No wonder they call him an obedient vending machine.

He passes the test.

Passed.

What passed? Jeez.

You couldn't even speak a word in front of Kim Jungha.

That's why I'm talking behind his back, idiot.

After the test, the actual game officially begins.

I'm really going to tell Lee Hyunjae

to help buy the drug.

Hey, he seems to be done.

Bro.

Let's talk.

Fentanyl, cocaine, and stuff like that

are too boring. No one will buy them.

As long as you can get them,

we'll find a way to sell them.

As usual.

There's that top-tier stuff, right?

You seem to know a pharmacist.

Just get a prescription, grind it into powder, and bring it here.

You know the drill.

Why should I?

Come on,

we're discussing this nicely with you.

I'm speaking nicely too.

Why should I do this?

Even if we get caught, we'll just be sent to juvenile hall.

You'll have to go to prison.

Are you threatening me?

Oh, if you think this is a threat, I can't help it.

If you want to threaten someone, go find the bastard who threatened you.

Go ahead.

I don't care if you report it or call the police.

If we take this kid down, we can definitely catch a pharmacist.

Hey, it's me.

I've given you a lot of money before.

Just do me a favor.

Hey.

What are you doing?

Part-time job.

Part-time job?

Hey, I don't have training today.

Can I go to your place?

Don't say things like that at school.

What kind of part-time job are you doing?

A darn good one.

Hey.

I see you're hanging out with Choi Youngmin. Are you stealing things now?

It's not like that.

Just pretend you don't know.

I already know. How can I pretend I don't?

Just like how you usually treat me.

Someone's coming.

See?

You're good at it.

Pretending not to know when you clearly do.

I'll go over when I'm done.

Hey, call my phone.

Okay.

I think I hear something from somewhere.

Bro, can I take a look?

I lost my phone.

I heard a vibration coming from here.

I heard you opened the sports equipment room for him.

Are you talking about Hyunjae?

Yes, him.

I mean, I'm keeping an eye on Hyunjae,

so you don't need to worry.

So... you knew he was locked in the equipment room?

He wasn't locked in.

He just needed some time.

You know those "thinking chairs" that help people calm down and think?

Just think of it as him sitting on a thinking chair for a while.

Does that make you feel better?

Mr. Jang, you might want to go take a look.

I told you there's a vibration coming from your bag.

I just want to take a look.

Are you trying to hide something?

This is so weird.

Everyone else let me see theirs. Why won't you?

Do you want me to open my bag for you?

You guys open your bags too.

It's your turn.

It is you.

Is this what you meant by not making me worry

and taking care of yourself?

As long as you don't interfere, sir.

Let's start class.

Class starts in 5 minutes. Everyone, go back to your seats.

(Boy, with Caution)

What? Stealing a phone?

Didn't I tell you to behave no matter what it takes you?

Is it that hard?

It's better to make him reconcile with Youngmoon.

Don't worry about anything.

Lee Hyunjae.

Just make sure his face is a bloody mess.

I stole that phone.

I just need to pay him back, right?

Is this what the chairman asked for?

Have you always been like this?

I'm just curious if you treat all students like this.

Consider it special treatment.

Yes, things like this happen.

Sometimes I want to run away too.

-It's getting late today— -Mr. Jang.

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