Continue the previous chapter:

(All): WHAT???

(Leonard): What did you say?

(Elon): I said the demons are coming to our house!

(Leonard): How they can do that?

(Theodore): You don't know? The demons smell are more than human hundred times more so they are can smell ours smell from a distance!

(Leonard): I think they has smelled me so they will follow me to our house!

(Elon): Summary, come help me now! The demons are too much!

(Leonard): Okay! I'm on my way! *hung up*

(Leonard): *put his jacket on and take his Nichirin Blade* Theodore, if the demons come here, leave it all to you! 

(Theodore): All right!

(Leonard): And everyone, stay and continue making the vaccines! When it's done, bring it to my place!

(All): Got it!

(Leonard): I have to go now! See ya!

(All): See ya!

And he goes out with his Infinity Warriors and goes away.

(Alvin): Okay guys! Let's make vaccines!

(All): Okay!

In that time at Nova City, Elon and his Infinity Warriors are fighting with the demons but when he are fighting the demons, a demons suddenly attack him and knocked out his katana.

(Elon): My katana!

And this time, a bunch of demons prepare to pounce and attack him, a water dragon appear from nowhere and attack the demons.

(Leonard): Elon! Are you okay?

(Elon): I'm okay! Thanks for saving me! Now we can fight now!

(Leonard): Okay! Lets do it!

And Elon and Leonard fight together to defeat the demons.

(Elon): Breath of Fire 4th form: Continuous Raging Fire!

(Leonard): Breath of Water 2nd form: Water Dragon Attack!

After that attack of the duo, the demons has thrown out. But there are still a lot of demon still here.

(Elon): Oh my god! They are too crowd! Ya! Are the vaccines done?

(Leonard): No! Everyone still making vaccines!

(Elon): How about the demons are coming to ours house?

(Leonard): Leave it to Theodore! He can defeat them cuz he also a Demon Slayer!

(Elon): Okay!

(Leonard): Wait Elon!

(Elon): Huh?

(Leonard): Twelve of them are the demons from Twelve Moon Demons! And the signs to identify them are the blue lines on their face!

(Elon): All right! I got it!

And they continues fight with the demons. Back to Elon's house, everyone are making vaccines from wisterias Leonard brought from the moutain. But...

(Kira): Hey! I see someone are coming here!

(Theodore): Get out! Lets me see!

And when he see from the window, he see a bunch of demons are coming to their house.

(Theodore): Oh no! The demons are coming to our house! Is the vaccines done?

(Harrisson): Almost done! Just a little more!

(Theodore): Hurry up! When the vaccines done, bring it to Elon and Leonard's place!

(Harrison): Okay!

At that time, Theodore immediately put his jacket on and take his Nichirin Blade and go outside.

(Elon's mom): Theodore! What are you doing?

(Theodore): The demons has come! I have to go out the fight with them!

And Theodore go outside and a bunch of demons has waiting for him.

(Theodore): You finally come! Today, you will die with me!

And the demons go to his place. Theodore immediately put out his sword.

(Theodore): Breath of Fire 1st form: Flame Cutting!

And after that attack, the demons has got slashed. After that, the vaccines has done.

(Alvin): It's done!

(Harrison): Okay! Bring it to Elon and Leonard!

(All): Okay! 

(Alvin): And leave few vaccine for Theodore to heal the demons!

(All): Okay!

(Alvin): *throw the vaccine to Theodore* Theodore! Here the vaccine!

(Theodore): *take the vaccines* Thanks!

And Theodore use these vaccine and injected into the demons and they return to normal people. 

(People): What happen? Why I am here?

(Theodore): Everyone! Run!

And they run out the area. And everyone are prepare to bring vaccine to Elon and Leonard.

(Harrison): Theodore! Leave it all to you!

(Theodore): Okay!

And they go to Nova City and Theodore stay at home to defeat the demons. And suddenly, a black hole appear and a demon appear from it.

(Theodore): Who are you?

(Demon King Muzan): You are 25th Fire Pillar, Theodore right?

(Theodore): Yes! It's me!

(Demon King Muzan): Oh! And do you know who am I?

(Theodore): You are...Demon King Muzan?

(Demon King Muzan): Yes! And I am come here to defeat you!

(Theodore): Defeat me? Sorry! But I am now stronger now!

(Demon King Muzan): Really? Now lets fight!

(Theodore): Okay! Whatever!

At that time, Harrison and everyone has come to Nova City with vaccines and when come to Elon and Leonard, its stop.

(Elon): *point at the bus* Hey! Thats Eco Team bus!

(Alvin): *come down* Elon!

(Elon): Alvin! Everyone!

(Alvin): *gaive the suitcase* Here! The vaccines is in here!

(Elon): *take the suitcase* Thanks!

And he open the suitcase and all of the vaccine is all in here.

(Leonard): All right! Lets save everyone!

(Elon): Okay! Everyone! Lets go!

(All): Yeah!

And they starting fight with the demons and also uses the vaccine to injected the demons to make people return to normal.

(Elon): Breath of Fire 8th form: Two Fire Dragon Attack!

(Leonard): Breath of Water 5th form: Dry Downsteam!

(Alvin): Breath of Mist 2nd form: Nine Layers Mist!

(Kira): Breath of Flower 3rd form: Flower Petal Slash!

(Donald): Breath of Earth 2nd form: Earthquake Attack!

(Harrison): Breath of Sound 3rd form: Unlimited Echo!

And they attack and injected the demons and after that, all demons has return to human.

(Elon): Yes! We did it!

(Leonard): *point at the demons* Look! There are still a lot of demons!

(Elon): You right! But whatever! Lets fight with them, everyone!

(All): Okay!

In that time, at Elon's house, Theodore and Demon King Muzan are fighting.

(Theodore): Breath of Fire 3rd form: Fire Star Attack!

He starting attack Muzan but he has blocked all.

(Theodore): What?

(Demon King Muzan): You think your attack can defeat me?

And he use his power to knocked Theodore out.

(Theodore): Damn it...! But I don't give up easily like that!

Then he gather all power to his Nichirin Blade.

(Theodore): Breath of Fire 11th form: Constant Flux!

After that, Muzan has knocked out and got injured a little. In that time, Elon's parent has come out.

(Elon's dad): Is that Theodore? And Demon King Muzan?

(Theodore): You two! Come inside! This place are very dangerous!

(Elon's parent): Okay!

(Demon King Muzan): You are also very good, 25th Fire Pillar!

(Theodore): You still alive?

(Demon King Muzan): Well, yes! And you will be die soon!

(Theodore): Nonsense! I will defected you! Breath of Fire 4th form: Fire Rate Dash!

And he move foward to Muzan with very fast speed and...

(Theodore): Breath of Fire 2nd form: Impact Flame!

Although Theodore's attack its really strong but Muzan totally blocked it.

(Demon King Muzan): I think you are stronger but with me, you are still really weak!

(Theodore): No way! AH!!

And he immediately knocked out again and hit to the wall.

(Theodore): *gasp* God damn it...!

(Demon King Muzan): Now it's my turn! Blood Demon Art: Million Blood Claws!

And he summon a thousand of claws and attack Theodore

(Theodore): I will never give up! Breath of Fire 1st form: Flame Cutting!

And he slash them, the claws has disappear. 

(Theodore): *come to Muzan* And now! Today, you will die with me!

And he rushed toward Muzan. But when he just come close to him, he was stabbed by a blood claw.

(Demon King Muzan): Blood Demon Art: Crimson Blood Claw!

And after that, he has been knocked out but this time, he has been serious injured.

(Demon King Muzan): Well, how do you think?

(Theodore): *gasp* I...will....never give up...!

(Demon King Muzan): What? You still have the strenght to stand up?

(Theodore): Yes! Because, I still have everyone and my friend...! I have to protect them...! I swear that....when I haven't defeated you, I won't put the sword down...!

(Demon King Muzan): Oh really? It's will be really fun!

And he and Theodore rushed toward to each others and they slash at each others

(Demon King Muzan): No! It's can't be! 

And he got  defeated

(Theodore): Finally...Everything is over...!

After that, Theodore collapsed and lay on the ground

(Elon's parent): *run outside* Theodore!

And they come out and lift his head up.

(Elon's mom): Theodore! I beg on you! You can't die!

(Theodore): Everythings...is finally...over...! Everything that's left...I leave it all to Elon, Leonard and everyone...!

And then he closed his eyes.

(Elon's parents): Theodore! Wake up! Theodore!

But in that time, Muzan has revived.

Oh no! Elon, Leonard and everyone still have to defeat the demons and Theodore has died! But a miracle will save him in the next chapter. Do you want to know? Read at the next chaper!