After defeated Sigma 2 month, Elon and his friend's life has return to normal and they still work in Demon Slayer Corps. (I will write a story about how they become Demon Slyers after this story end).

At Elon's house:

(Elon): Finally everything is over! - A 13 years old boy with red hair and red eyes with a goggles on his head. That's Elon - an apprentice Demon Slayer but now after in Demon Slayer Corps, he has become a little more professional about using Breath of Fire. He is wearing Demon Slayer Corps uniform with a white jacket with a flame pattern at bottom of the jacket.

(Leonard): Yeah! But I think it's not over yet! - a boy who older than Elon 3 years old with blue eyes and blond hair was swiped backwards with a white part on his hair. That's Leonard - a more professional Demon Slayer than Elon with ability using Breath of Water. And he are wearing Demon Slayer Corps uniform with blue jacket with light blue wave pattern.(if you watched Kimetsu no Yaiba, you will know Demon Slayer Corps uniform how is it and their uniform I took ideas from that and I made it become different form the Kimetsu no Yaiba).

(Elon): You think so?

(Leonard): Yeah...! I think today is the day Theodore-san return to Demon Slayer Corps and see Urokodaki-sensei again.

(Elon): I heard that he has left Demon Slayer Corps 3 years ago?

(Leonard): Yes! 

(Theodore): I am done! - A boy same age with Leonard with red eyes and orange hair came out with a Demon Slayer Corps uniform just like Elon and Leonard and his jacket is very different. Its has some point same with Elon's jacket but its has some red stars on it. And he also a professional Demon Slayer like Leonard cuz he are more professional in using Breath of Fire than Elon and he also can uses some difficult form of Breath of Fire, specially is Raging Fire Eyes.

(Leo): Oh my motherfucking god! You are so beautiful!

(Theodore): Yeah! Cuz this is the first time I meet Urokodaki-sensei again so I have to wear Demon Slayer Corps uniform to make he reconize me!

(Leonard): Hell yeah! 

And he look at Elon's watch set o the table. It's 7:30 am already

(Leonard): Oh my god! We are late!

(All): What time is it now?

(Leonard): It's 7:30 am now! And Urokodaki-sensei's meeting will start at 8:00 am!

(Elon): Hurry!!!

And the trio run down the stairs with a altar speed and after go downs, they take their Nichirin Blade. I will describe their Nichirin Blade.

Elon: His Nichirin Blade has a metal blade with a red on one side of the katana with a red and gold flame-shaped guard and a small angel wings at the left side of the guard with red and gold hilt with white cord on it.

Leonard: His Nichirin Blade also has a metal blade but its have blue at one side of his katana with a blue and silver water drop-shaped guard and an angel wing at the right side of the guard with blue and silver hilt with white cord.

Theodore: His Nichirin Blade has a same point with Elon's Nichirin Blade but the blade are made from silver not from metal like Elon and Leonard's Nichirin Blade and its has a red side shaped like a flame at on side and its also have a red and gold flame-shaped guard but its has 3 color are red, orange and gold and have a wings at both two side with a red and gold hilt with white cord.

Return to the story:

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

(Elon): We're going to Demon Slayer Corps Headquater right now! We're late!

(Elon's dad): Okay! Have a good day!

(All): OK!

Andthey going to Demon Slayer Corps Headquater with an altar speed and 5 minutes later, they have arrived at the headquater.

(Leonard): Oh wait!

(All): *stop and crashing each other at the back*

(Theodore): Hey! Why the heck did you tell us stop?

(Leonard): I think you need to going back of us, Theodore!

(Theodore): Oh! Seem fun? Why I have to do that?

(Leonard): Just do what I said! We have make Urokodaki-sensei surprise!

(Theodore): OK! Whatever!

Then he go back the line and they come in. Everyone has waited the trio and Urokodaki-sensei also arrived.

(Elon): Hi Urokodaki-sensei!

(Urokodaki): Oh! Hi Elon! Hi Leonard! I heard that there are a another person go with you two?

(Leonard): Yeah! Wait me for minute! Theodore, come out here!

(Theodore): *come out* Hey you! Don't call me like I am a child!

(Urokodaki): Oh my god! Theodore! My old student!

(Theodore): Urokodaki-sensei!

And he run to Urokodaki-sensei and hugs him.

(Donald): Uh...Elon! This guy is Urokodaki-sensei's old student?

(Elon): *sitting down the chair* Yeah! He was Urokodaki-sensei's old student!

(All): WOW!!!

(Kira): Is he really Urokodaki-sensei's old student? THat's cool!

(Leonard): Hey! How about me? I am Urokodaki-sensei's old student too!

(Alvin): Yeah! We all know that!

(All): *laugh*

(Harrison): Okay kid! The meeting started

(Theodore): Urokodaki-sensei! You still remember me?

(Urokodaki): Of course! 

(Theodore): Can I become Demon Slayers again?

(Urokodaki): Of course! I will!

(Theodore): Really? Thanks, Urokodaki-sensei!

(Leonard): What the heck? I am also his old student but when I return to Demon Slayer Corps, he doesn't remember me!

(Elon): Cuz you have worked for Sigma to defeat Demon Slayer Corps so he doesn't remember!

And he return to his seat.

At Sigma's headquater:

(???): Finally! I have revived to defeated the human!

(Unknown demon): Yes, boss! It's time to revenge human!

(???): Yeah! I gave a disease to the Earth and human on the Earth will become demon and they will spread this disease to all the world and the demon will rule the world! Hahahahahaha!!

                                                                      TO BE CONTINUE