Original subtitles

Everyone...

I forgot to mention this in our lesson a minute ago.

Even if an assassin tactfully avoids any close combat,

there will always be a few times in his life

when he has to fight with all his power.

In my case,

that time is now!

Koro-sensei!

TWENTY-THIRD PERIOD FINAL BOSS TIME BY CHIBA RYUNOSUKE & HAYAMI RINKA

Each hit produces a sonic boom.

An extraordinary battle has just begun.

I can't see

their movement, but I know

Koro-sensei is

being dominated by them.

Koro-sensei!

Do you feel despair, guinea pig?

Two people times tentacles times

genius times the power of hatred.

Your inferior power

has been surpassed!

Please teach me how to kill!

Are you serious? I just killed

your father.

It doesn't matter!

I had a privileged life, but I've been lacking something.

After seeing you kill my father, I know what it is!

I want your skill!

Even if that means I have to work until I die!

He was a boy who didn't know right from wrong,

but I saw talent and his dreams and hope in his eyes.

Before he tossed aside his future and sanity,

I could've raised him differently.

It's a different dimension.

It's such a different battle.

It's enough to make us think

our year of hard work was useless.

There's nothing we can do.

We're just in the way, not able to run.

We're Koro-sensei's biggest...

He's starting to dodge it?

Then what about this!

It's nothing!

Wow...

He diverts the hits with minimal strength, uses dirt to block the light

and closes the distance to reduce impact.

His ideas compensate for the difference in power.

Our teacher is really a teacher.

This is our difference in experience!

My student took the wrong path,

so as his teacher, I will take responsibility.

However...

You must leave, Yanagisawa.

This place is for the students to grow. You have no right to be here.

You still want to pretend to be a teacher, guinea pig?

Then I'll test you...

Don't you know why we chose to come at this time?

Won't you protect them?

You're their teacher after all.

This...

The kids!

Koro-sensei!

What a model teacher, guinea pig!

You could have dodged that attack,

but you took it head-on to protect the students.

Come on 2,0, next.

Next...

Next!

Next! Next!

What dark raging emotions.

The strongest emotion

is blood lust born from love.

It won't be satisfied until the target's heart and body

are torn into pieces.

Koro-sensei!

This was bound to happen when the target and students are together.

It was the wrong choice

for you all to come here tonight.

Stop, Yanagisawa!

Don't harm the students!

Karasuma!

Watch quietly, you government's dog.

You can't win against me anymore.

I knew all along...

I knew but...

I pretended not to.

I would say about seven to eight will die.

Jump in and save them, Koro-sensei.

How do you feel?

Look at your students' despair being a burden to their beloved teacher.

Do you get it? Your biggest weakness...

Koro-sensei's biggest weakness...

is...

us.

Of course not!

It's not a matter of right or wrong!

They risked their lives to save me

and overcame obstacles to come and see me!

That process...

their heart...

is the best present

a teacher can ask for!

They're not a weakness or a burden!

They're students!

I'm proud to call them all my students!

And protecting my students

is my duty as a teacher!

I see, I see... but you know,

that duty of yours will be denied by us. You will run out of strength soon

and the students you protected

will be tortured to death by me.

The year you obtained by wrecking our lives...

I will prove that it was all worthless!

Then our revenge will finally be complete!

Now let's continue. Make sure to protect

your adorable students.

-Idiot! -Why?

Run Koro-sensei! I'll buy you time so hide somewhere to heal!

Kayano...

You did used to have tentacles, after all. I guess you still have dynamic vision.

Don't do it, Kayano!

I regretted it...

That everyone found out the truth because of me...

That I robbed

the class fun time...

So, please let me protect you

as your student.

You did the right thing! Because of that,

everyone learned an important lesson.

2,0...

Don't worry, Koro-sensei.

I can do it if I put my mind to it! I learned that from

my sister

and you!

B... both sisters died in front of me!

What a troublesome bunch!

I could have used her as her sister's replacement,

but too bad I'm not interested in a bitch with a gaping hole.

That's it!

When you lose control of your emotions, your whole body turns black.

You can't use your full power unless you're that color

which means black is the true color of the destructive creature!

You yourself have denied

the year you spent with that

fake ridiculous yellow face!

I'm satisfied now.

And all of your anger

will also be denied by 2,0's true power.

It's the last attack.

Let's move from here!

Nagisa?

While his attention is off of us!

If we stay, we'll be caught up in it.

But...

Running is also one of our strategies.

This year was like Hell.

But it will end now.

What? A white light?

No, his tentacles are indeed black.

No,

it's yellow!

Red...

Green...

‪Blue...

White...

All of my colors,

all of my emotions,

all of my past,

all the lives...

I'll mix them all together

into pure white energy.

My student,

graduate in peace.

Oh no!

If my tentacles are melted...

No!

What are these?

I plucked them randomly and arranged it.

I thought a calming skill like that can be useful for killing too.

I'll remove it if it's a bother.

No, keep it here. You have a good eye.

You're better than me.

Great! Then I'll arrange one every day.

That's fine,

but study science everyday too.

Your science level right now can't kill a mosquito.

If I was looking at that smile, I could have shown him a different life.

The tentacles asked me

what I wanted to be.

I wanted your recognition.

I wanted to

be like you.

I understand your feelings now. If we meet on the other side,

let's study together.

So we both don't make the same mistakes.

No one

gave a shout of joy.

Koro-sensei, Kayano is...

Kaede...

Let's lay her down.

Don't put her down, Nagisa.

I don't want her to touch the bacteria on the ground.

Koro-sensei...

You can't get back what you lost in the past.

I myself have made many mistakes.

But you can use the past as a lesson

to not repeat those mistakes.

What is this?

Kayano's blood and somatic cells.

I collected it before she fell and kept it in a sterile shell made by compressed air.

All while you were fighting?

I set aside tentacles to protect you

and kept them safe during the fight.

Now I will connect every single cell.

Faster...

More precisely...

I've been polishing my abilities this whole year.

If the same thing happens,

I won't let it end in the same tragedy.

Some cells I can't repair, so I'll evenly make gaps

and fill them with my mucus.

Within a few days her own cells will regenerate

and replace them.

I need some more blood. Those with AB, I need your help.

Nakamura! Pick up the birthday cake and feed it to me!

Huh? It's become garbage with so much dirt on it.

I need to replenish my energy!

I wanted to eat it the whole time! It's the 30 minute rule!

Three second rule!

Delicious! Delicious!

Without a single thread or scar,

her wound is closing up.

Her heart just needs to move.

I followed the manual When a Student is Gutshot at School.

Should be perfect.

Who is prepared for such a situation!

I'll let you know that even if you all are cut into pieces,

I am prepared to bring you back to life.

As long as I am there...

As long as I am looking at the students...

You saved me again...

And I'll do it again.

Your sister would've done the same.

What's important

is to not repeat your mistakes.

Aguri, was I any good at being a teacher?

This year that you gave me

was like a treasure.

NEXT TIME

There was always

guns, knives

and our teacher.

We're assassins...

and our target is

our teacher.