The upper second-class demons can speak in human language.
The upper first-class demons are demons that can use a type of technique or ability, this is something that is suddenly developed, some demons are born as first-class demons. They can go into the sun for a short period.
The special class demons are demons that are like humans, in appearance, speaking, thinking and ability. They can stay in the sun for as long as they want. They are so strong that they haven't been a record of a special class ever getting killed.
All demons die after their head have been cut off but a special class demon won't die. They are only one way I know which is using the phantom snake to suck their chakra until they dry out but it won't work on all special-class demons.
In the end, I didn't find out anything about how to restore their humanity**
My father was the first person study demons, but most of his discoveries had been proven wrong.
After reading all this, I was sure that May was a special class demon. But why can't she talk? And there must be a way to make her human again, and I'm gonna make sure she becomes human again.
...
I woke up with everyone looking at me surprisingly.
"What's wrong?" I asked.
Kakashi pointed at me shaking, it was like he had just seen a ghost.
"Is it true that Mira is your sister?" He asked.
"What?"
"I know right, I thought she was kidding herself. But she kissed you!" Kanade said.
Now I'm lost, I don't understand what they were trying to say.
"Can you guys talk a little slower? I don't think I got all that with water stuck in my ears"
"Just answer the question," Kakashi said, he seemed worked up. "Is Mira your sister?"
"Yeah, Natsuki adopted me when I was six"
"Why didn't you tell me sooner!?" He exclaimed, running around and screaming. I think he has completely gone mad.
At least, now I have a family who cares about me just the same way my dad did.
_KAKASHI_
"Hibiki had been asleep for a while, either that or he's dead," I said.
"Don't say stuffs like that" Ayaka cautioned me. " But, who would have thought that Hibiki can't swim?"
"I know" I announced, an idea just came to my mind. "What about a mouth to mouth?"
"What?" Ayaka exclaimed.
"You know, I put my mouth on his and bre...." I tried to explain.
"I know what a mouth-to-mouth is, but I don't want you to do it"
"Why not?, It's not like we're doing anything bad. Besides, we are both dudes"
"That's the whole reason I don't want you to do it"
"Then who will do it?" Kanade asked.
There was silence, all the girls looked at each other.
"I'll do it since no one else wants to. It's not like I want to but" a girl shyly said.
"No, I will," another girl said.
That's how all of them started arguing about who will kiss him. Poor Hibiki, if only he was awake to see this.
"Okay, calm down" I yelled trying to stop them from fighting. "There is a simple way to resolve this!"
"How?" Kanade asked.
"Like this!" I walked up to Hibiki, held his shirt and slapped him, but he didn't wake up.
"Instead of slapping my brother, why don't you let me use my magic?" Mira walked up to Hibiki and kissed him, he started coughing out water. "Big brother, are you okay?" Mira asked pleadingly.
"Wait!, Did you just say big brother?" I asked.
"Yes," Mira answered.
I looked at Ayaka and the other girls, they were all surprised except Kanade.
Hibiki woke up.
"What's wrong?" He asked.
I pointed at myself shaking.
"Is it true that Mira is your sister?" I asked. It came as a surprise to me, I mean he has nothing in common with Mara and Natski.
"What?"
"I know right, I thought she was kidding herself. But she kissed you!" Ayaka said.
"Can you guys talk a little slower? I don't think I got all that with water stuck in my ears" Hibiki said, hitting his head with his palm.
"Just answer the question," I said. "Is Mira your sister?"
"Yeah, Natski adopted me when I was six"
"Why didn't you tell me sooner!?" I exclaimed, running around and screaming.
"I can't believe it. I was finally able to kiss him" Mira smiled to herself, drooling. "It wasn't good but I was worth it"
The same lady who came to tell me and Hibiki that Natski was calling us, came back again with Natski.
"Say it," Natski said to her.
"But...I'm..too scared"
"They are your junior, Rin, they are not going to eat you" Natski encourages her. "And It's an order"
"Yes ma'am" she replied stammering.
I guessed there was bad news, maybe Kato's blood technique hit someone when we dodged it, and Natski was going to blame me for being so careless.
"Everybody park your stuff, we're leaving!" Rin ordered.
What?, She is too shy to make a simple announcement.
Nokunomi ran up to her and hugged her tightly.
"Big sister!"
"Oh, let's get going little sis," Rin said to her sister and carried her away.
"Remember you said we'll be traveling for the exchange program, right? Dad said he wants you to come to watch at the academy at home"
"Yeah, I almost forgot. Thanks for reminding me"
"Of course. You really can't do anything without me, can you?"
"Don't worry, we will go together next week, okay?"
"Sure"
I watched them happily walk away, and for some reason, I felt sad. I wish my sister was here.
"Let's get going, bro", I said. "It's getting late"
He stood up and held Mira's hand.
"And I never got to enjoy the beach" He complained.
"Don't worry, brother. We can come back the next two weeks after the exchange program" Mira said trying to console him.
"Nah, it's okay" Hibiki replied trying to shake off the pain he was feeling. "No girl will come to the beach at the end of summer"
"Oh, so that's why you were peeping at us" Mira teased.
"Emm, no. That's not what mean"
"And Kakashi, I didn't expect that from you" Mira scolded me.
"What!!?, It was Hibiki" i opposed
"No, we were trying to peep at Ayaka and the other girls," Hibiki said.
"You don't think I'm attractive," Mira said angrily.
"No. I got a nosebleed just looking at you" I said hoping it would make her feel better.
"All pervert have nosebleeds when they see a loli," Mira said.
Did she just call herself a Loli?
"You never got to wear what I bought for you," Mira said disappointed.
"Seriously!!!?" I asked. "I also forgot, but don't worry. I kept it for you"
"In your dreams," she said and Hibiki laughed as we walked away.
"What??" I said pleading with Mira. "That's not fair!!"