"UWAAAAAA!!!

" Gintoki shouted really hard with a panicked expression on his face.

Haru was calm since it wasn't his first time but he really wanted to smack this stupid octopus.

Korosensei moved very fast toward the direction where he had smelled of blood.

It was before long that they saw two children fighting against a headless body and a creepy head with two hands.

The girl was kicked and thrown away by headless body.

Korosensei knew that they needed to save the girl first since he was sure the boy would be okay. His speed was very fast and they had arrived in the fight between a girl and the headless body. He couldn't help the girl since his power was very weak,

"Haru!

"

"Yes, Sensei,

" Haru jumped and grabbed the headless body away from the girl. He pushed this body on the ground and started a rush punch without mercy.

Baam! Baam! Baam! Baam!

"It won't die,

" Korosensei said.

"Yeah, let's try something else,

" Haru said and started to use his light magic. He knew the weakness of the demon was sunlight. He had learned a lot of magic from the Magnostadt Academy and suddenly his hand started to become bright.

The body of the demon which was grabbed by him suddenly burnt and wanted to get away from him but his bones had been broken by him. The body could only helplessly be turned into ashes and died.

Haru was glad that they had found a demon when they had just been teleported to this world. He noticed the presence on his side and said,

"Oh, do you know where a demon is?

" He was waiting for his answer.

"UWEEEEGHHHH!!!!!

"

".....

"

"Ugh, my head hurts,

" Gintoki said while puking a lot of things from his mouth.

Suddenly the atmosphere became very strange all of sudden.

Haru sighed and walked toward him using his healing magic to heal his motion sickness,

"Are you alright?

"

"Yeah, I feel better,

" Gintoki massaged his head and felt a bit comfortable.

"I'm sorry, Gintoki-san,

" Korosensei said.

"No, you're lucky there is no police here or else you will enter jail for speeding offenses,

" Gintoki said.

"Oh, you don't need to worry since most of the police won't be able to catch me, nyuhuhuhu,

" Korosensei smiled.

"Is this how a teacher should act in front of his student?

" Haru asked.

"W - Who are you guys?!

"

They turned and had almost forgotten his existence.

Tanjiro started to observe three of them. He saw the young man with expensive clothes that had a lazy smile on his face, then the one who had puked on the ground with messy hair, then lastly a yellow octopus.

"...

"

'Wait? Octopus?' Tanjiro opened his mouth wide when he saw the yellow octopus that stood up. He also noticed that three of them were very tall compared to him and two of the men had very strange hair color. He wasn't sure but he felt that he started to be ignored by the three people in front of him but he still quite nervous toward them,

"W - Who are you guys?

"

"Before you ask someone's name, shouldn't you introduce your name? Don't you know some manners?

"

Tanjiro was startled by the words of the man but he nodded,

"My name is Tanjiro Kamado and she is my little sister Nezuko.

"

"Nyuhuhu, Tanjiro-kun, Nezuko-kun, there is still a demon right over there? We need to solve him before it starts to harm other humans.

"

Tanjiro suddenly realized and nodded,

"Yes, also thank you very much!

"

They smiled looking at him.

"So your name is Kasugano-san, Gintoki-san, and Korosensei?

" Tanjiro asked while holding his little sister's hand.

"Yes, your luck sure is good to meet a demon in the middle of the night,

" Haru said.

"Haha....

" Tanjiro smiled dryly while hearing his words. He had a lot of questions right now but he knew that it would be rude to ask them suddenly.

"You're not curious about us?

" Haru asked.

Gintoki and Korosensei also looked at him with an interesting expression.

"I'm very curious but I know that the three of you will be very rude since you've helped us,

" Tanjiro said.

"Well, boy, you don't need to be that stiff, you can ask us a question,

" Gintoki said.

"Nyuhuhuhu, you should never be afraid to ask a question,

" Korosensei said.

"T - Then what are you?

" Tanjiro said while pointing his finger at Korosensei.

Nezuko looked at Korosensei with a curious expression.

"Me? I'm a teacher,

" Korosensei said.

"Teacher?!

" Tanjiro felt strange and asked,

"I don't mean it that way! I mean, are you a human?

"

Korosensei wanted to fool him again but Haru didn't let him.

"Tanjiro-kun, we're coming from a land far away,

" Haru said.

"Land far away?

" Tanjiro felt confused but also interested.

"There are a lot of people in this world, we're coming from the land of freedom, America,

" Haru said.

"....

" Gintoki and Korosensei were speechless.

"A - America? Where is that?

" Tanjiro had a hard time pronouncing that word.

"Anyway, that place is very far away, we're coming using a ship and living in the sea for a few months to come to this country,

" Haru said.

"Why are you coming to this country?

" Tanjiro asked.

Haru let out his tears and had a very sad expression,

"I - It's because Korosensei has a sickness that turns him into an octopus that we're coming to this country.

"

"Yes, at first that his skin turns yellow, then he has turned into an octopus,

" Gintoki also cried.

".....

" Korosensei felt strange and wasn't sure how to respond when he saw both of them.

Tanjiro and Nezuko also looked at Korosensei with a pitiful expression.

"...

" Korosensei was speechless looking at them.

"We're coming here to search for a medicine that can help him turn him back into normal and on the way we've heard a legend about a demon that is eating a human, they're a bit similar to the thing that we're fighting back in our homeland,

" Haru said.

Tanjiro was surprised,

"Is there a demon in your country?

"

"Yes, but we call it either a vampire or a zombie,

" Haru said.

"V - Vampire? Z - Zombie?

" Tanjiro had never heard such a word before.

They were walking back to the temple while talking to each other.

"BASTARD! WHAT HAVE YOU DONE TO MY BODY! I'LL KILL YOU!

"

They saw a head with hands stuck in a tree by an ax.

"That's the demon,

" Tanjiro said while pointing his finger.

Haru understood why the number of demons that they had killed didn't increase.

"They're really immortal, huh?

" Gintoki was a bit surprised to see it.

"Let me purify you,

" Haru said, and used his light magic to turn the demon into ashes.

Nezuko hid behind Tanjiro when she saw the light.

"It's okay, Nezuko, they won't attack you,

" Tanjiro said, but he was ready to fight them, even though he knew that he was weaker.

"Is she your little sister? Has she turned into a demon?

" Korosensei asked.

"No, she isn't a demon! She has never eaten a human!

" Tanjiro protected his little sister.

They looked at each other and couldn't help but laugh.

"W - Why are you guys laughing?

" Tanjiro asked with a confused expression.

"There is no way that we will hurt your little sister since we have someone here who really loves his little sister, right?

" Korosensei said.

"...

"

"Why are you looking at me?

" Haru rubbed his nose and said,

"The old man over there, can you come out and join our conversation?

"

"Huh?

" Tanjiro was confused but suddenly he saw someone walking toward them,

"W - Who are you?

"

"Hoo? Have you noticed me?

"