Perfect Number

Synopsis: Seemingly an ordinary math teacher in high school, Suk-go is indeed a brilliant mathematician. Hwa-sun is his neighbor. They become inseparable when Suk-go decides to cover up Hwa-sun's accidental murder while she was mercilessly beaten by her ex-husband.
Genre: Drama, Thriller
Director(s): Eun-jin Pang
Production: CJ Entertainment
119 min

Perfect Number

It stopped raining

It's a bit cold today, Yoon-Ah

What are we going to do with this?

Oh, no

Hope it's not dead

"No, it's not.

Leave it, I'll take care of it later"

- See you

- Ok

See you


Good Morning Lunchbox to go, right?


It's our new dish

Please try it.


thank you

Have a good day

Good morning!

One Hand Roll, please

The Good Morning Lunch guy

who comes in everyday

I think he likes you

You noticed it too?

You know how guys are

just so attracted to me

You surely can talk

Why don't you

go on a date with him?

You know I have Yoon-ah

What about her?

She's in middle school

She won't oppose if you get married

I won't see anyone

until Yoon-ah gets married

And I don't really like dorky guys

The nth triangular number is n(n+1)/ 2

The proof of this formula

S is sigma K equals one to n

n-2, n+1

Who the hell cares about

those stupid formulas?

Why don't you play it?

Don't just pick chords


If that's a note C

If you play the twelfth fret

What note is it?

It's a C, an octave higher

If you play a C and G together,

what do you get?

That's a C chord

That's correct

It's also called the perfect fifth

because it's perfectly consonant

Music is

It all sounds different to our ears

But it's only a matter of how to assemble

chords in consonance

Of course, notes like C, D, and E already have existed

like numbers 1, 2, and 3

The person who found out the relationship

between these individual notes

and made formulas called chords

- Is Pythagoras

- Doped-gores

This triangular number

we are studying right now

Pythagoras discovered it

I'm home



- What's wrong?

- I feel sick

Sick where? Oh my goodness

Hold on


Excuse me!

- What's wrong?

- I'm not sure


What are the symptoms?

Her breath is irregular

Fast and slow

She's having a cardiac arrest

Clear the airway

and prepare CPR

- Yoon-ah!

- Please step aside

Lift your head

You alright?

Ma'am this is medicine

the man you came with left it for you


Good Morning Lunchbox to go. Right?


It's the hospital bill you paid last night

Please take it


This lunchbox is the interest

Yoon-ah likes math unlike other girls

You're a math teacher. Right?


What was that?


- There's something

- You told me to date him

Thought you said you don't like dorky guys

Something must've happened

Is he free-diving?

Beginners should never try it


F***ing a**hole

Son of a b*tch

You laughing? Die, b*tch!

Die a**hole! I'm going to kill you

A**hole! Don't laugh!

Is that you, Yoon-ah?

Where's your key?

Thought I couldn't find you?

F***ing b*tch

You b*tch

Thought you could run away?

You sleep well?

Thought you can live without me?

No f***ing beer?

Get up and sit down, you b*tch

Girl, I went all over town

every bar and club in Daejeon

Leave us alone please

Leave you alone? F*** me.

Auntie, your daughter's home

Hi, Yoon-ah

You've grown up beautifully

Your daughter'?

That's some f***ed up family tree

Come in. Go inside

Come say hello to your uncle

You little b*tch!

Don't yell at her

Tomorrow, I'll wire you every penny I have


Let me see your face

- Wow, very scary

- What are you doing?

Go away

Look at her b*obs

Just leave!

Damn, leave her alone!

What? Let's have fun

This is nice and fresh

I'm going to kill you

Oh yeah? Let's die. Let's do that

Alright, f***ing kill me

Stay still

F*** yeah

You f***ing b*tch

F***ing slut

F***ing b*tch


F***ing b*tch! Move

Come here b*tch!

"- Stop!

- Come here, f***ing b*tch"

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Gong-ju Lee

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Submitted on August 05, 2018

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    "Perfect Number" STANDS4 LLC, 2023. Web. 10 Dec. 2023. <>.

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