At Demon King Muzan's lair: 

(Demon King Muzan): Now the Earth has all infected the demon disease I have brought on the Earth. Soon, demon will rule the world!

(Unknown Demon): Yeah, Lord Muzan! But the Infinity Warriors and the Earth Demon Slayers are trying to save people from that disease! We can't let them happen!

(Demon King Muzan): Oh, I think ours Twelve Moon Demons go to the Earth! Zukomaru, let's prepare, we will come to the Earth!

(Zukomaru): Yes, lord!

Return to Elon's house:

(Elon): So Alvin, you say that you know the material to make cure vaccine?

(Alvin): Yes! And that material is....

(All): *waiting*

(Alvin): Is....

(Elon): Hurry up!!

(Alvin): Is wisteria!

(All): Wisteria?

(Donald): Why does it sound like the name of a flower?

(Kira): Wisteria is the name of the flower!

(Leonard): I have heard that wisteria is a flower that demons really scare and the ancient people uses wisteria to ward off the demons!

(Theodore): I know it now!

(Elon): Know what?

(Theodore): If the ancient people use wisteria to ward off demons, in the present time, we will use wisteria to make a vaccine to save people!

(Leonard): Oh wait! I forgot tell this to everyone, the demon tribe I have told everyone named Twevle Moon Demon cuz there are 12 demons and they working in the night so they weakness is the sunlight!

(Kira): So we can use the sunlight to defeat the demons cuz now is the morning!

(Theodore): I don't think so, Kira! Check at outside!

And Kira so into the windows and see the sky are covered by black clouds.

(Kira): You right, Theodore! The sky are covered by black clouds so that's mean the demon can go the the Earth without got burnt by the sunlight!

(Elon): And where we can find wisteria?

(Alvin): I have seached on Internet and find out wisteria is the flower we can't find in the city!

(Elon): And where we can find its if they can't be found in city?

(Alvin): But we can find it in the moutain! There is a lot of it!

(Elon): Really? Leo, guys! Lets go to the moutain to find wisteria!

(Leonard): No Elon! Stay here! I will go find them!

(Elon): Leonard! Why you always leaving but don't let me go? I'm not a kid anymore!

(Leonard): No! You and everyone just stay here and wait for a new breaking news about that disease! When I found them, I will bring it back to everyone to make vaccine!

(Elon): Okay!

(Leonard): Guys, lets go!

(Sabertooth): Okay!

And Leonard and his Infinity Warriors leave and he climb to Argentavis and fly to the moutain.

(Elon): I'm so worry about Leonard!

(Theodore): Don't worry, he will be fine!

(TV reporter): Everyone! Breakings news about the strange disease! A bunch of demons come from nowhere came to our Earth and now, ours city and the world is in danger! Demon Slayers, we need your help!

(Elon): Oh my god! The demons finally come to the Earth! We need to call Leonard now!

(Theodore): No! I think he just come to the moutain so Elon, come the city with your Infinity Warriors first to deal with the demons and the people who has become demons!

(Elon): I got it! Leo, guys! Go to the city!

(Leo): OK!

And Elon put on his jacket and take his Nichirin Blade and he with his Infinity Warriors leave.

In that time, Leonard and his Infinity Warrior has come to moutain. After come, he has jump down and that montain has many wisteria.

(Leonard): Wow! There are so much wisteria!

(Argentavis): Hey! Remember that we need many wisteria to make vaccine!

(Leonard): I know that! But I have to ask the owner to these wisterias!

And he come to a small house and inside it is a old man who live alone.

(The old man): Can I help you, young boy?

(Leonard): Um..Hey man! Let me ask, do you know who is the owner of these wisterias?

(The old man): Well...I am the owner of these wisterias! Do you want take some wisteria to home?

(Leonard): Yeah! I need these wisterias to make a vaccine to cure people who has suffer the strange disease that make people become demon! Can I take all of this flower?

(The old man): You also know abot that disease? Everyone in my village also talk about that disease! Cuz you want to take these to make vaccine, I am very willing!

(Leonard): Really? Thanks!

And Leonard and his Infinity Warriors start picking all flowers. After a few minutes, he has picked all the flower to his basket he and his Infinity Warriors brings.

(Leonard): Okay! Lets go home!

In that time, Elon has come to Nova City and in front of him is a very chaotic scene: many people has become demon are flooding the city.

(Elon): Oh my god! I didn't think this disease would turn out like this!

(Aries): Do we need to call Leonard?

(Elon): ...

Suddently, a bunch of demons smelled his smell and rushed to attack him.

(Elon): Oh god! The demons is coming!

(Leo): We need to call Leonard!

(Elon): Don't worry! I will deal with them!

When the demons rushed to his place, he uses his Nichirin Blade to protect him and pushed them out. But another bunch of demons keep rushing to Elon.

(Elon): They are too many! I think I have to use my skill!

Then he jump up to the air and create a huge fire power by his blade.

(Elon): Breath fo Fire 2nd form: Raging Fire Attack!

Then after that, the demons was thown away. Suddently, he saw Argentavis fly on the sky with Leonard on it.

(Elon): Huh? Is that Leonard?

Butfollowing them is a demons army is following them.

(Elon): Huh? Where are they going?

And he check his positioning devices where the demon and he shocked after know where the demons going.

(Elon): Oh my god!They are coming to my house!

(Infinity Warriors): What?

Return to Leonard, after coming home, he and his Infinity Warriors rushed to inside immediately.

(Leonard): Guys! Here the wisterias!

And he take all the basket with full of wisterias inside it.

(Theodore): I think these are enough to make all the vaccine for all people!

(Alvin): Okay! Lets make vaccine right now! We don't have much time!

(All): Got it!

(Leonard's phone): *ringing*

(Leonard): *pick up* Hello!

(Elon): Leonard! I need your help!

(Leonard): What happen, Elon?

(Elon): The demons is too much now! I think with just me can't defeat them! I need help!

(Leonard): Alright! I'm in my way!

(Elon): And I want to say this! Warning to everyone that...

(Leonard): That what?

(Elon): The demons has smelled Leonard and they are coming to our house!

(All): WHAT???

                                                                          TO BE CONTINUE