"Kayano-san, Nagisa-kun...this boy... is your mission. His name's Yukimura Tsukiro," Tadaomi introduced the boy to the surprised former members of Class E, "I hate to surprise you but I had to reveal this information... Kayano-san, he is your biological nephew."
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Nagisa and Akari can't believe what their former Sensei has revealed to them. This boy, Tsukiro, was Akari's biological nephew?
Irina could feel the dark aura surrounding the four of them, so she called her daughter, who approached her mother with a bright smile on her round face, "Aimi, darling, can you bring Tsukiro-kun out to play? But please, don't get too far, or you will get lost."
Aimi nodded, then grabbed the now red-faced Tsukiro's hand and dragged him away, as she spoke brightly, "Yes, mommy! Come on, Tsuki-kun!"
"Tsuki-kun?" Tadaomi repeated with a questioning look on his face, when the two children were out of the adult's earshot, earning a shrug and a chuckle from Irina.
"You know Aimi-chan, she became closer to a child she only met for the first time, especially to a boy, in a few seconds," Irina spoke, folding her arms," She is a future woman, she is a natural charmer, like me!"
Tadaomi could only mutter "why do I have to marry you?" comment on his wife, smiling a little at his wife's antics before looking at their former students.
Akari shook her head in confusion, "But I only have one sister, and she is dead long time ago. And all that I know, she is not pregnant at that time! And besides that bastard Yanagisawa-san, Aguri-neechan never had a boyfriend that I know of!" she screamed.
Nagisa looked at the boy, who was still blushing from not far away from they were standing, then made a mental image of his former sensei (Yukimura-sensei). He could see the similarities between Aguri and Tsukiro. The boy has similar hair and eye color as Aguri, and it seems that he also inherited the eyebrows and the cute little nose too. And the smile that the boy has, it was just like her. Tsukiro bears an aura that could make people smile and ease around him, just like Aguri had.
But the eye and facial shape, the pale and milky skin, the nearly invisible little freckles that sprinkled the child's nose...Nagisa could deduce that it must be the father who had given his genes to the child.
"Unfortunately, it is not what the DNA test and this file says," Tadaomi had grabbed a file from his jacket and gave it to Nagisa, who received it and opened it. Akari, with shocked eyes, looked at the file. They read the file, staring at the pictures and the descriptions inscribed on it, their eyes widened every passing second.
"I can't believe it...Neechan, she had a child..." Akari can only gasp in disbelief. For seven years...The child had been existing for many years, and they only knew it now? And for Aguri to have a child..it was unsettling for Akari.
"Tsukiro-kun's father is Koro-sensei?!" Nagisa screamed as he stared at the file in disbelief. Akari looked at the paper bearing the information about Tsukiro's parentage and her eyes scanned four photos on it.
One bears little Tsukiro's picture, probably younger than he is now, with a 'test subject, uncontrollable' label on it. He was still wearing his huge glasses, smiling brightly as his raven-orange eyes sparked with wonder. He was wearing a blue shirt with a moon and bunch of stars with scary faces on it. He still have his leash on his pale neck.
One bears Yukimura Aguri's picture, in a lab coat and silly yellow t-shirt bearing a face of the duck on it, with a 'blood mother, egg donor' label on the picture. She was smiling brightly, her raven-orange eyes sparkled with hope. Akari couldn't help but smile a little, I can see where Tsukiro got his eyes...and his choice of clothes.
One bears Koro-sensei's picture, with a 'current form-blood father, antimatter genes activated' on it. He was wearing his usual graduation robe attire, with a crescent moon necktie of his, a present of Aguri herself.
Lastly, one bears a picture of a handsome young-looking man, with shaggy raven hair that reaches his nape and bangs that reaches his nose, mellow dark eyes that seems to hide some secrets, pale and milky skin, and weird eyebrows. He was wearing a pale blue shirt, more like you had seen in the lab or in a hospital. There was a label 'human form-blood father, antimatter genes not yet activated' on it.
It didn't take a dumb person to connect the lines between the octopus and that young man.
"This was Koro-sensei when he was human?!" Akari and Nagisa couldn't believe their eyes, "He...he was damn handsome!" Akari screamed in disbelief.
Irina laughed as her husband looks miffed, "That damn octopus was right all along. Koro-sensei was handsome back when he was still the greatest assassin in like, ever... but for me, no one can compete my husband's charm," she flirted on her husband, who rolled his dark eyes, "Come to think about it, I think I have met him before, I think I had once flirted with him at one party I had attended back when I was still active as an assassin. But I never thought it was the God of Death, more especially the octopus years back," Irina raised her hands as she laughed lightly. Her husband just sighed.
Nagisa looked at the picture of Tsukiro and the human Koro-sensei, "Well, that bears the similarities. The pale and milky skin, the little freckles, the eye shape, the structure of the face, the hair style...it seems Tsukiro-kun inherited Sensei's good looks," he had commented.
Tadaomi shook his head as he replied, "Not just the octopus' human form's looks that the boy inherited from his father."
Nagisa and Akari got confused, as they both spoke, "What do you mean, Karasuma-sensei?"
The military man had looked at the two children playing afar, most likely Aimi poking the poor little Yukimura Tsukiro. The boy was looking down, his face red with embarrassment. His huge glasses were a little skewed as he try to push it back into place.
"Tsukiro-kun apparently had inherited some of the abilities that his octopus father had. More likely, he can conjure tentacles from any part of his body," the military man had spoke.
"That means that...Tsukiro-kun is like Kayano and Itona-kun before?" Nagisa inquired, earning a guilty look from Akari.
Tadaomi shook his head as he spoke grimly, as he looked at the boy in question, "Unfortunately, Tsukiro-kun's condition is more advanced than the tentacle implants, but less advanced than the octopus' condition. We could say, it is like the tentacle implants, just like in the case of Kayano-san and Itona-kun, but compared to the two, Tsukiro-kun's tentacles can't be easily removed, for the antimatter particles is already grafted in his DNA. In short, it is impossible to eradicate, the tentacles is already part of him."
Akari looked at the children with pity, asking her former Sensei with sadness on her voice, "That means he can't have a normal life? If his tentacles are permanent, does that mean he had to be monitored and experimented for the rest of his life? Do...we need to kill him like we did to Koro-sensei? Maybe that is why you called us, isn't it?"
Nagisa widened his eyes at what he had heard and looked at Tadaomi with disbelief, "Sensei, we can't kill a child!"
Tadaomi sighed, his wife Irina comforted her husband by patting his back with her smooth touch. "You misunderstand. I called you two here first because you two are closer to that octopus, especially Kayano-san being related to Yukimura Aguri-san. The rest of the E-Class will be informed about this too, they are also included in this mission."
The man closed his eyes, and took a deep breath, before he spoke in a serious voice, "You will be tasked to take care of Yukimura Tsukiro and teach him to control these powers of his."
"WHAT?!"
Akari and Nagisa widened their eyes as they couldn't believe what Tadaomi had told them.
Their former Sensei's expression never changed. "In fact, the government need the child alive for science and military purposes, as we have been expected to know. As I said before, Tsukiro is a special case, for his tentacles implanted on him was a special kind of tentacle cells made from antimatter, and they would like to know the benefits of it so the government could use it to their advantage."
Akari narrowed her hazel eyes as she yelled in anger, "Governments and their agendas! Tsukiro-kun is just a damn child! And he is still human! How unethical is this?"
Irina gently lowered her voice as she commented, "Creating the boy is unethical enough, dear."
Tadaomi glared at his wife, "Not the time, Irina."
Irina shrugged, "I am pointing a fact, Omi-chan. We can't deny that Yanagisawa bastard had crossed the line."
Nagisa nodded, as Akari looked at the boy playing with Aimi, "Bitch-sensei is right, he crossed the line by experimenting with life already. But we could not blame the child for just existing."
"What about exploding? Is he like Koro-sensei? An unstable antimatter creature? Will there be a deadline? Please don't tell me he has a deadline..." Akari asked, still looking at the boy with worry.
Tadaomi replied, "Fortunately, they had revealed that the scientists had found out that the child has a low probability of exploding, which the problem with the octopus at first. Apparently, Yanagisawa had replicate the chemical that Okuda-san had made for that octopus."
The two young adults sighed in relief.
"But we had to consider the fact that the child was still young and inexperienced in using his powers, and the government can't raise the child nor kill it, or it will be another Koro-sensei drama again," Karasuma vocalized his concerns, as the two nodded in agreement.
"So...we need to raise the child as a class?" Akari questioned, as she looked at the children.
The former Sensei nodded, "Yes. But don't worry, the government will provide you funds and things needed to raise him. Of course, they will monitor the child's progress every few months so they could see how he had been developed. The boy was on his rough times, so I hope you will do your best to raise him into a respected individual."
The two nodded, "We will not fail you."
Akari stared at the file again as she caressed the photo of her deceased sister, when she noticed another paper stuck below the page full of Tsukiro's info. She grabbed the file from Nagisa as she picked the paper and her eyes scanned the data.
"Twin sister? Tsukiro's other half? What does this mean?" Akari questioned.
"And who is this baby? I am sure it is not Tsukiro-kun, the hair was different. It was dark green," Nagisa pointed out, seeing the photograph attached to it.
The Karasumas looked at each other before turning their heads to their former students, Tadaomi sighed deeply as he spoke, "I forgot to tell you but...Tsukiro-kun is not the only child created by Yanagisawa Kotarou."
Akari and Nagisa's eyes widened in shock.
"In fact, he created another child. His own child."
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In a mysterious place not far away, a 7-year-old girl was crying in the corner of her room. The room is colored pink, with a comfortable bed on the side of the room, and no windows. There were books and educational toys lying around the floor, while a chalkboard has messy mathematical scribbles on door leading to the outside was locked, making her trapped.
The door opened, revealed a blonde man in a lab coat, looking at the child with fake cheerfulness. The child looked up, her green curls was flowing in her head, black tinged with orange eyes were staring at the man fearfully, whimpering.
The man smiled as he approached the trembling child, cold eyes looking at her as he spoke smoothly,
"Well, dear child, it is time..."