Chapter 18 - The Kamado Family Finds Out

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Kamanue and Tanjiro fought for the next few minutes. It was difficult for Tanjiro to hold the Twelve member off until Isekai arrived, not to mention that Kamanue's attacks were at a high scale.

"Flame Burst!" Kamanue yelled out as an instant flaming explosion opened on his adversary. Tanjiro tried to lighten the explosion impact in any way possible as to not awaken his family by using as many defensive techniques as he could.

Tanjiro tried to go on the offense, but almost, if not all of his attacks missed. "Clear Blue Sky!"  he cried inside as his hands sustained more pain. "Pyro Ring!" they both cried into their hearts as 360 degree spinning flames hit each other. "You're good, kid! I wonder how you're still a low-rank demon slayer! Flaming Retribution!" he said as he let a loud explosion out of his hand.


2:00 AM, Kamado Residence, Master Bedroom


Kie smelled smoke, and woke up due to its intoxicating fumes. "Ugh, is there smoke anywhere? Is there a fire?" she asked herself as she carefully picked up Rokuta. She went to the kids' room to wake up Shigeru, Takeo and Hanako. "Kids, I think we have a fire somewhere in our house!" she said, worried.

Takeo sniffed the air and caught the scent of smoke. Shigeru and Hanako weren't that far behind to catch the fumes. The five ran over to the bedroom of their 2 eldest, where they found Nezuko at the doorway, just asking them where Tanjiro is. Nezuko was already awake. "Hey, has anyone seen onii-chan?  There might be a fire here!"

"Wait, Tanjiro's not there?" Takeo questions, raising his eyebrow. "I think he may be dealing with the fire!" she said as all six ran down to get outside, but found no fire at their house. To their surprise, the fire was next door. When they got closer, the house suddenly exploded.


2:10 AM, Neighboring House, Second Floor


"Come on, kid! Step it up! I haven't seen anything but the defensive side of you! Scorching Swing!" Kamanue demanded, infusing his arm with fire and swinging at Tanjiro. "Hinokami Kagura: The Setting Sun!"  he cried into his heart as he backflipped over Kamanue's flaming arm swing, and slashed at his neck. Kamanue, however, leapt back and scorched his hands.

"How about a little more leg room?! Blood Magic: Explosion!" he yelled out as he smashed his scorching hands into the ground, exploding the whole house into a pile of burning pieces. Tanjiro landed on a pile of debris, next being hit by a rock to the stomach 2 seconds after, and looked behind him to see his family, watching him.

"I'm... so sorry... mom... for not telling you..." He begged for forgiveness, as his mom stood, silent, disappointed that she was not told about whatever she had seen. "Weakling. I only just modified the arena, how could you be dying already? Oh well, at least this rids that man  of another pest..." Kamanue muttered, charging up a lethal attack.

Kie stood in front of Tanjiro, attempting to protect him from what was coming. "Even if you weren't being fully honest, you never lied to me, Tanjiro. No matter what happens, you are my son. I will protect you to the end," she said, spreading her arms apart. "Move it, lady. I'm only here for your son. I'll leave you and your family unharmed if you just back off," Kamanue suggested. However, she still persisted, and kept her protective stance.

"No? You won't move? Alright then, at least I get another kill." he said as he prepared another Scorching Swing. Before long, Kamanue was ready to end the Kamado family's mother's life before her kids. Somewhere close by, something was running towards Kamanue. In one instant, he was kicked away, and cut to pieces. Isekai had arrived, just reconnecting his composite sword.

"Sorry for being so late... and..." Isekai apologizes, realizing the rest of his family was standing there. "...I think I owe your mother and the rest of your siblings an explanation, excluding Takeo and Nezuko," he continues, a slight bit of sweat dripping.

"You two knew about this as well... It seems like this is serious," Kie says, picking up Tanjiro. "It is. I'll explain everything, ma'am. Let's go inside your house, and we'll talk about this."


3:00 AM, Kamado Residence, Living Room


Isekai was having a cup of coffee. After he sipped, he took a breath, and was ready to explain everything. "Alright. Here's the background of what you had seen. You have heard of the criminal mastermind Muzan Kibutsuji in the news, right?" he asks. Kie, Hanako and Shigeru nodded.

"Listen, he's the leader of a massive criminal syndicate known as the Twelve Kizuki. The group was only made to be a criminal group of thirteen, including Muzan. However, he figured out that he could have a whole army of amplified Blood Magic users. They are called Demons," he starts, taking off his gloves. "Amplified Blood Magic users?" Kie questions, not knowing what Isekai was talking about.

"I may as well explain Blood Magic and Breathing Magic. Breathing Magic is a type of power that can be learned. Taking deep breaths activates the spells arsenal, and you can unleash many attacks of different types. Flame, Water, Wind, Rock and Thunder are the five primary breaths. An example, Tanjiro. He uses what he calls, uh... an Altered Flame Magic?" Isekai says, looking at Tanjiro, who was sweating a little. "Yes." he answered, hoping no one knows about the Sun Magic secret.

"This reminds me! Nezuko, explain," Hanako requested. "Oh yeah. Nezuko is a user of Blood Magic, a type of magic which requires no specific things other than the blood of the user of that magic. Her magic in this case, is Explosion. As we're in the topic of Muzan, I'll share you some info."

Isekai cleared his throat, ready to explain a lot. "Muzan's Blood Magic is called Black Blood. It's a highly unique one, as it has no actions, other than being able to steal, amplify, give any Blood Magic, or turn anyone into a demon. He is also able to read the thoughts of others, and read their memory. Taking his blood lays a curse on them. Dare they say his name, the curse triggers, and they are immediately killed. Hell, he can even set it off himself. It's also possible for him to destroy demons' cells.

Taking his blood makes you immortal, and it gives you the ability of regeneration. In turn, it makes you vulnerable to sunlight. Meaning the only way to kill them is to either make them set off Muzan's curse, cut their neck, or burn them in the sunlight.

An exception, though, is if the demon is somehow able to conquer the sun, or conquer the weakness of the neck. Even then, a regular sword will not do. A blade of sun-absorbing iron, known as Nichirin, would do the job.

According to a slayer that encountered him and was able to slice his neck, you can't kill him even if you slice his neck off with one. You can only kill him with either a technique I built up, or the sunlight," Isekai says, picking up his sword.

Kie then asks, "What does this have to do with my son?" Isekai snaps back, and starts explaining more. "Right. The demon Tanjiro faced was a member of the top twelve, and like me, he is a member of the Slayers Corporation. We are a government-supported army who strives to kill demons. We also do commissions. Most of the teachers at our school are a part of the most powerful, and I am their leader, although, yes, I am weaker than them."

"...I see why they didn't want to tell me. They wanted to protect us, and they were right about their possible thought that I would have refused to let them in," Kie mutters, opening her eyes to everything. "I think I've shared enough. You all should get some sleep. We have school in the morning," Isekai said as he finished his coffee and left for his home.

Tanjiro looked at his mother. "I won't forbid you, but please don't get hurt too often," Kie requests. Tanjiro nods. "Thanks, mom. I'll protect you and the others at every cost."


To be continued...

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