Meet Tamayo and Yushiro

"It must be here somewhere." I touched the ground to check whether there is a underground base or not. I followed the trace and they led me to this place but this place is empty. There is no singer house and secret base.

"Am I wrong?" nothing was found, I decided to give up. Only rustling wind.

"Let's call it a day and I need to go to sleep, now." yawning, I felt my head was stiff and hurt. This is a symptom of lacking sleep and sleep late.

"Tonight, I think I will camp in this forest. Hoping no predator coming for me." my eyes were weary and tiresome. I can sleep on the ground with no fire camp.

"I guess I will sleep on the tree. My back will be very hurt."

Before I climbed on the tree, a hand was appeared from the void. Yes. The void. This scene made my brain from ready offline to online immediately.

A boy with a girl demon behind him were emerged from the space. Behind him, there were another 2 demons.

5 people. With confusion eyes staring at each other.

"You are one of the people who join that exam."

"Does she follow you?" Tamayo asked.

"No, she is not." Tanjiro answered. Nezuko also nodded to express her opinion.

"Idiot. You lead her to this place. Now the fighting is unavoidable."

"Tanjiro. What's this?" I said with a threatened voice and also surprised face.

He got along well with those 3 demons. This is like drama on TV show which human side with enemy.

"So you ally with them, right." a boy that I tried my best to remember was hanging out with demon.

"You are misunderstanding. Not what are you thinking. They are innocent and my sister never harms human before." Tanjiro said while standing in front of them. As if I was their enemy.

"No. Actually I understand something between you guys. Let me guess for this thing" I said in insidious way.

"Tamayo. Go back inside. I will kill her." Yushiro said. This granted a look of disappointment of Tamayo. "Sorry"

However, she still chose to stay."I must explain her. I won't seek unnecessary blood."

"I think a possibility that can explain your relationship. YOU. ARE." each word was stressed. Their expression was darkened. They are all afraid that this fight can't be avoid.

"The defected, right." I looked straight at 3 demon eyes.

Immediately, a atmosphere dropped several degree. An awkward mood rose between me and then.

"Maybe I use wrong word. Let me change it to less intense word. You're rebeler right." I cough to clear my throat.

"Basically, in the meaning. Yes. We all hate Muzan." Tamayo was the first one to respond.

"Look like we have some common. Maybe we can be friend" I said with a cheerful smile.

Thinking back, I shivered because I met something that I shouldn't meet. The only reason why I join demon corp is their technique. From my point of view, this can be considered as strongest martial art that I have ever seen. Not only that, I planned to master all kind of breath. Breath of fire, breath of sound or breath of mist. I was deeply interested in those.

"That's right." Tanjiro scratched his cheeks in nervous.

"You are such a brute and annoying woman" Yushiro pointed at me with his fingers.

"Look like you have just killed demon." This time is Yamato said.

"Yeah. That's a touch fight but I win it anyway." I formed OK sign.

"Pardon for me. Although I know it late but I will introduce. My name is Yamato and this child is Yushiro."

"And this boy is Tanjiro and his sister is Nezuko." she said with elegant and polite manner.

"Hello" they both replied.

"My name is Jean Sophia by the way I'm a demon slayer. I aim to be a master of all kind of breath cause I find it's very interesting and useful."

"What's a rude way to introduce."

"Yushiro." she glared at him. He went silence under her eyes.

"Introduce's done. Can we go to the main point?"

"What kind of main point you are saying?" she gently rubbed Nezuko's cheek.

"You say you are demon but the defected one. I want to ask how you escape from Muzan's manipulation. After all, he is an ancestor of demon. A god of demon. A false god."

"You can say that I was lucky. Muzan met his nemesis and was defeated. And this boy was created by me" she introduced the boy beside her.

"And what is his name?" I was absorbed in this kind of history.

"Yoriichi Tsugikuni. A man that defeated Muzan and also the first Breaths user." She stressed his name for me to hear clearly.

"A man that win demon king. I'm hooked right now. Can you tell me more about him? Like what kind of breath did he use."

"He is the strongest demon slayer. I personally witnessed his win. It was an overwhelmed victory. For his technique, he uses breath of the sun."

"Wow. There exists breath of the sun. Does breath of moon exist?" I was excited when hearing that sun light can be imitated with only breathing technique. Also, Tanjiro stunned after hearing this. He felt this is somewhat familiar.

"Demon can be killed by beheading their neck or sun. However, the more stronger demon is, the first weakness will be less fatal so this lead only one weakness. The sun. Breath of sun is effective when using against demon. However, he failed to kill Muzan" Her eyes contained sadness.

I didn't notice her sadness and frustration. Cause I was indulging myself how my life will be easy when I create the sun light. In my back is the theory and sample. I need to test them before using it.

"Since you live so long, can you tell me all demon characteristic like weakness mostly."

"Wait wait. You ask her too much. It should be our turn to ask back." Yushiro said aggressively to me.

Before Tamayo could prevent him, I interfered."I don't mean but before that. How about entering my house to discuss?" she flicked her finger. Immediately, a house appeared behind.

"Wow. Invisible house. I like that." I came closer to inspect and then, I saw talisman attached on house.

"Come in. This is boy's skill. I will treat you a tea."

"Nice. By the way, can I sleep here to pass night."

Before Yushiro could protest, Yamato gave a sign stop.

"You can." She answered.

"I very appreciate your help. You save me one night."

"They are not like other evil demon. Please don't harm them." Tanjiro looked at me with the eyes of puppy.

"Sure thing. I'm not that vicious." I assured him that I won't harm them. It's a rare case to meet demon that opposed Muzan. Just like this boy, I can tell that they are a good demon to their core.

Why.

That is easy. Normal vicious demon meets human will be like. You are lowly human, you are my meat, an ant is always an ant, how I should kill human to make my dish become more delicious.

Or like. They will lunge on you right the moment they see you.

Before that, I never meets cunning demon. A demon that will 100% brain not 100% muscle brain. Never meet. All of them will try to eat human at the moment they see human.

I don't know whether they are not smart or too arrogant. In conclusion, those 2 are not malicious demon. This is not included that I live longer than normal human.

"See you again, one day. Bye "

"Bye" Tanjiro replied. With this, I and that boy met and departed.

I entered the house but I felt some subtle sub-space in this place.

"That doctor is amazing. It's pity that he is dead."

"So can I ask you a question" Yushiro looked at me with threatened graze.

"Stop this rudeness, Yushiro." Yamato said.

"It's fine. I like energetic boy. So what do you want to ask?" I humbly replied.

"You. Demon slayer. I only ask you only one question. Only one."

"And what is that"

"Do you have intention to harm Yamato?"

I was flinched this question. Amn't I saying from the beginning that I don't have this kind of intention."Absolutely not. 100% no" I still need to give him an answer.

"Fine. You can continue" he disappeared from my sight.

"I'm sorry for that boy's rudeness." she knelt and bowed her head to express her sincerity.

"Not a problem. I don't mind this. Can we continue what we are saying." I hurriedly brought the topic back on table. My brain kept telling me to sleep. What a devil call.

"I will tell you but there is one thing keep bothering me. Is that you really encounter 2 demons on the way."

"Yes. I killed them by the way. Don't need to thank me."

"Those demon that you killed. Do they have word on their eyes?" her graze was sharpened when saying this sentence.

"Word. On their eyes." speaking of this, I remembered that they are indeed have word writing on their eyes.

"I think yes. The sky is dark but they really have it." I answered with confidently.

"How many do they have?"

"That. I think only one." is that word on eye means something special.

"This is the case."

"What's wrong with that? They impressed me that they are strong demon." although they were on disadvantage, they can make a touch struggle before I could finish them.

"They are called lower moon. There are 12 of them in ranks."

"Oh what."

"They are also working directly under Muzan."

"Tell me. Did I court my life to death god? Cause he say that he will find me." I grabbed her shoulders wanting her to answer.

"You are getting too close. Keep some distance" Yushiro separated me and Yamato.

"Sorry but can you tell me." I laughed nervously.

"Since he says so, you will be probably dead"

"Oh no. I want to rewind time back."

"Why he should pay his mind to you. He never has this kind of attention since that age. The age that man is still alive."

"Wew. I must be some kind of threat to him."

"If that so, I can't help this matter but can you please retrieve those 2 demon corpses so that I can create antidote."

"Sorry. Their cell expose to high condense radiation." hearing this, I can only stated this fact. I also had intention that I will keep their body to do some research. For science and evolution.

I also kept some demons in my base. Mostly to test my product.

But after reconsidering the danger of radioactive, this kind of though disappeared.

"What is radiation that you are saying."

"It like this" I started to explain her uranium element and how it create radiation. And how it's really danger to human's health.

"So their cell contained that dangerous substance." she asked with surprised. This is first time she heard that demon can be killed by gun and an ore that contributed part of it in this achievement.

"You can say that." I can only scratched my head to relieve some of my nervous.