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A Powerfull Assassin on Parallel World become Demon Lord?!

Ryuga Kiyotaka is an ordinary boy that you can find anywhere. But he has a big secret that he hides from anyone. Ryuga works as Professional Hitman or Assassin. He doing that to continue Kiyotaka's Family tradition and to repay their kindness. He is an Orphan, but he has a lot of talents to make him recruited as an Assassin. He never failed to do his mission and have a 100% success ratio. On a certain day, he was teleported into a Parallel World after he finished his mission by a wicked Goddess to become Demon Lord!! This is story about the adventure of the Strongest Hitman with powerful gadgets to find a way to return on Earth.

Shameless_Author · Anime & Comics
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27 Chs

Kosaki's Memory Part 1

Kosaki Kiyotaka was the ideal Japanese girl, beautiful and talented but a little innocent too. The inarguably perfect heroine, popular with guys and girls alike. Of course, she was at the top of the school academically, but she was also way better than any other girls at sprints, throwing and the rest of PE activities. And not just girls, she was neck and neck with the top guys, too, like some kind of princess of the fantasy world.

She wore pleasant, natural makeup and had a friendly smile, and there was something about her that was impossible to hate. Her charm was very sexy that makes any girls wondering how she made it all work. Her silky smooth long hair tied in a ponytail made her very lovable and cute.

"So what do you think about Kosaki-chan?"

"You mean Kosaki Kiyotaka?

"What do I think? I mean, she is awesome. Doesn't everyone think that? She is a superstar."

"Yeah."

"She is like a prodigy. School, sport, look and everything about her is perfect."

"True that. I know I could never beat her at anything. Neither could you."

"But she still gets along really well with everyone. She doesn't pick and choose her friend. She also doesn't use people."

"Not only that, she was from a distinguished family, with that perfect background, I feel like she was a princess."

"Right? I wish I could spend my youth to become her boyfriend."

"In your dream boy...Neither of us deserved to become her boyfriend. I mean, look at her flawless spec, meanwhile, we are like a rough and cheap stone."

"Ughh...but at least I can have her in my dream!!!!"

Such a conversation is always happening in the school. The boy who looking for a chance to become her lover was once again faced with reality.

Her family could destroy their family if she wanted. They doubt their princess will do that, but her parents probably won't let their daughter date with someone lower than their caste.

Currently, Kosaki was inside the literature club's room. She likes read books and the senpai is very kind to her. Her brother also joins this club, but he only comes when Saturday.

"What's wrong, Kosaki? You've been spacing out lately.", Shiranai Moni, who sits next to her asked Kosaki with a tilt of her head.

Surprised, Kosaki shook her head.

"Huh, Ah, umm. It's nothing."

"Were you thinking about your brother, maybe?", Momo asked, as though she had seen right through Kosaki's thoughts.

"U-umm...Yeah.How did you know? Kosaki's eyes widened.

"It was very obvious though. You never get close to any boys except for your brother. Not to mention, he always picks you up after school and club too. Ne-ne, are you plan to start forbidden love with him?"

"Of course not. We are sibling after all (though we not blood related each other)", Kosaki hides the fact from anyone.

"But the rumors said that the reason why you reject countless boy was due to your brother."

Kosaki had been breaking a lot of boy's hearts because she rejects going out with them. She always answers [I can't start that kind relationship now].

"In the end, they were just rumors with no credible source."

"But I already knew you for long time Kosaki-chan. Your looks to your brother are different with a normal sibling. How should I put this, I feel you hold a special feeling toward him."

"What are you talking about Momo-chan!! Nothing happened between us, jeez seriously...", Kosaki averts her eyes to hide her reddening cheeks.

"Say that once again, while you look at my eyes, Kosaki-chan.", Momo grinned.

"Ah, mou...I can't hide anything from you huh..."

Kosaki only knows Momo, when she entered this school. They meet as a member of the literature club and spent their time together. Momo was very sharp and care about the other people feeling. She always curious about anything and Kosaki need to calm down her to prevent the worse situation. One day, Momo-chan tried to peek someone [Confession]. Kosaki managed to drag her and admonished her, that stuff was a private matter. She couldn't stick her nose into something like that.

"I know that he is very handsome, smart and quite cool. He doesn't speak too much, like the most boys but that's was not enough to win your heart right?"

The boys in the school were very childish. They often speak nonsense and have strange delusion toward the girls. Of course, not everyone like that, there are several boys like Akito-senpai, the ace of the soccer club. He is pretty cool with a face like a prince, his communications skill is far from Ryuga and that makes him become "Prince" of the school.

Ryuga evaluation was not quite high. Aside from his face and his academic ability, he never made an effort to talk with anyone. His communication skill was quite terrible since he couldn't think about any topic of conversation. His mind actually occupied the mission and his family. There was almost no place for nothing like a friend in the first place.

That was because Ryuga always using facade. The Ryuga they were seeing was the innocent Ryuga, but actually, he was an assassin. This fact was unknown except for his parents and the other party related to the work. If he confessed that he was an assassin, undoubtedly he will be expelled from the school. At that time, even his friend won't accept him as their friend anymore. So why he should make a friend in the first place, when they just wanted to know "innocent" Ryuga?

Ryuga wanted to have a friend who actually cares about him. He doesn't want to start a shallow relationship. To him, the people inside his class were just his acquaintances.

If they asked, he will answer them.

If they need his help, he will help them (with consideration)

If they invite him to the party, he will participate as a "classmate".

He has no strong feelings toward the class. That doesn't mean he was an apathetic person, he just doesn't like to deceive anyone else. At first, he was forced to create a facade, to please his new parents and hide his feeling. But after spending time together with them, he begins to realize he shouldn't do that. Not only he lied to anyone, but he also lied to himself. There was a part of him, wanted to stop his facade.

But...

If he stops doing that, would his "Friend" accept his hand which was soaked with blood?

Could something like "Friendship" can overcome the obstacle of being a friend with an assassin?

He was scared...

He doesn't want to lose anything anymore, so he just put some distance toward anyone except for his family. He was sure that they will accept him no matter how happened to him, except for his sister though.

With his expressionless face, he always gets harsh humiliation as [Doll Prince]. He never shows any hint of annoyance toward the one who mocked him, instead he just smiling like a buddha. Not long after, the slander was slowly decreased because it has no effect on him.

"Yeah, I don't know about my feelings toward oni-chan, but I am sure that I admire him.", Kosako gazing to the scenery outside the window.

"What do you mean Kosaki-chan?"

"Well..."

Kosaki recalled the first time she met with Ryuga. Her parents brought her to the orphanage to adopt a new brother for her. That was just an innocent wish from her, as she wanted someone to play with her and to protect her when she needs.

There are a lot of children inside the orphanage, but one boy was strangely stand out from the rest of them. He was silently reading books with the composed look without being disturbed by the noise and the situation.

Most of the children here were running around, shouting which color is the best and many childish remarks like that. How should she put it, Ryuga was clearly different from the rest of the children.

"Oh, my I helped you sir?", one of the Orphanage's staff came to her father.

"I wanted to adopt a boy for my daughter. I looking for a healthy boy and if he was smart and well behaved, I will be appreciated it."

With that high standard, Kosaki doubts his father will find the candidate for her brother. But she unexpectedly gets an instant reply.

"Ah, we have one boy with those qualifications. That's him." , The staff pointing at Ryuga.

"Umu...I already put him to my list, but somehow, I feel he was quite different from the rest of the kids. Is he very special or something happened to him in the past?"

"I am sorry, I couldn't tell you anything about him if you don't adopt him but I could tell you, he was lost his parents and he witnessed the death of his parents with his own eyes."

"Ah, I am sorry...I don't know at such a young age, he had through bitter experience."

"So, would you take him, sir?"

"Hmm...I will take him as my adopted son but I will check him first."

"Yes, certainly." , Then the staff give them permission to meet with Ryuga.

Shinichi and Nanase were tried to confirm Ryuga first beforehand. They don't want to buy the cat inside the bag. As they approaching Ryuga, their shadows were envelope the book that he read. Ryuga raises his head a little to see who comes to meet him today.

'Hmm, new face huh...'

"Do you need anything from me?"

"We just wanted to know your name."

"My name?"

"Is it wrong for asking your name?"

"If I answered that, will you happy?"

Inside this place, Ryuga was treated like [weird child]. He will give the answer to satisfy anyone who asked him. He doesn't have a place to go and if the staff was angry with him, he would end up as a homeless child without the future because they will chase him out.

There were no parents want a weird child like him. In the Orphanage, he was like a parasite, who have no contribution or value. He was smart but he lacks communication skills. His expressionless face made him look quite scary for a child.

Adopting him was not different from adopting a robot...That kind of impression that most parents had when they met with him.

"...."

"No, no...I don't mean to disturb you. I just want to know you better because I wanted to adopt you as my son."

Ryuga's eyes slightly opened and make him look quite funny. His dead-fish eyes were slowly filled with hope to escape from this hell.

"My name is Ryuga...That was my name from my old parents."

"Ryuga is it? Then Ryuga, are you willing to become my son?"

"I willing to do anything to leave this place as long as I have a place to stay."

"..."

That was a very strange reply from a child like him.

"What do you mean Ryuga-Kun?"

"In this place, I was nothing but a parasite. They often told me that I just wasting their food and budgets. If you were willing to accept this "robot" as your son, I will follow you until the rest of my life."

"..."

Kosaki's parents were bewildered because of the unexpected response from Ryuga. Kosaki also quite shocked when she heard that. Normally the children will act innocently to attract the candidates of the parents while showing their best to get chosen.

But Ryuga was different, he exposed his bad side without hesitation. Along with his confessions, Kosaki's family able to recognize his strength and his personality. He also proved that he was quite decisive, because if what he said was true, that means he only had this chance to leave from this place...but why he doesn't show his talents to convince them?

Nah, maybe that was because of his personality...

Ryuga was promised to obey them as gratitude for letting him join the Kiyotaka family. Obtained a child like him will shorten the training process since Shinichi needs a strong-willed kid to fit the role. This visit ends up with a lucky discovery

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