The darkness of the night illuminates throughout the shadow as the sharp wind accompanied it.

"You've got that wrong, I really did mean to kill your parents..." Koro-sensei stated as shadows appeared on his face, there, Angel stood on the grass helplessly, any moment she could breakdown.

"Then...it wasn't an accident that you killed my parents? You mean...it?" no reply, he remained in silent as Angel's eyes widened immensely.

"You're kidding right? That's not funny...Koro-sensei." she lightly chuckled, convincing herself that he's pulling out a pun. However, he didn't replied.

"Why aren't you saying that you're just kidding?! Why are you clamming yourself? Answer me, damn it!" she yelled, she couldn't continue anymore with his foolishness.

"It's the truth...I killed your parents." when those words slipped out of his mouth, she had this urge to beat his living daylights out to hell.

"Why did you killed them...?" she muttered lowly under her breathe while clenching her fist tightly, some of the class looked at her worriedly.

"Why did you killed them?! What did they ever did wrong to you? Give me back my parents, you murderer!" she yelled as Karma started grabbing her arms, holding her back in place.

"My parents are the only people who gave me support, now that they're gone...who am I suppose to lean into?! No one, but myself and money!" tears fell on the floor from Angel's crimson eyes, she was depressed right now...she just couldn't take it.

"I'm really sorry...it's just—" Koro-sensei was cut off.

"I don't need your sorry! Even if you apologize, you can't fix the heart that has been broken, you can't redeem the things you've took for granted!" she reasoned out while tears verging from her eyes, no one understands what she's feeling right now, because they haven't lost something important to them before.

"The dead won't come back to life anymore so don't bother apologizing!"

She break from Karma's grip as she clutched her anti-sensei knife in hand, her eyes were filled with rage while tears fell on her cheeks.

"Instead, do me a favor and die!" she yelled as she sprinted up to Koro-sensei, ready to stab him anytime, no one tried to stop her, because if they were in the same case, they would probably do the same thing and kill him.

"Die!" after she yelled, she thrust the knife in Koro-sensei's body, he coughed loudly as Angel's eyes widened, then she separated the knife from his abdomen and she stared at him with disbelief.

"Why...didn't you dodged it?"

"I wouldn't mind if you're the one who gets to kill me, after all I did."

"What...?"

Her knife dropped on the floor as her body trembled greatly, she was lost and confused in the current situation.

"You're pitying me, are you? If you are...drop it! I don't need your pity!"

Koro-sensei lightly shook his head as this made her confused, what does he want now after this? "I'm not pitying you, it's just my way for repenting for my sins..."

"What are you trying to...say?" Koro-sensei handed her the knife that she dropped earlier, he smiled at her gracefully as always.

"If killing me will satisfy you, go ahead and stab me. You still have to get your revenge, right?" that's when her world crashed greatly, it became suffocating for her to breathe as tears rapidly fall.

"But...just give me a little time...let me live until March, just give me another chance to repent my sins, please." Koro-sensei begged for repentance, she clicked her tongue as she shoved the knife in her pockets.

"You still have to tell us your past, if I let my emotions get the best of me...I wouldn't know what really happened." she said as she wiped her tears as she tried to smile her brightest, even though it was just a forced smile.

'But...maybe, if he didn't killed my parents, I wouldn't be able to meet Karma, Rin, and everyone in class E.' she thought to herself while she felt mixed feelings of sadness and happiness in the same time.

"Everyone, I will now tell you about the past that I wanted to hide for myself...please listen."

Everyone nodded as he turned to every students present right here.

"This Class E is the first I've taught, even so, I've managed to teach you just about every subject without a hitch...why do you that is?" Koro-sensei asked.

Everyone was shocked after realizing the answer that he was seeking for.

"No way..."

"Oh my, is he even a...?"

"Yes, until 2 years ago, I was the assassin known as the Reaper."

Everyone gasped in the sudden shocking rules, well it isn't so surprising for some readers who've finished reading the manga...!

"Koro-sensei, is it true that even if we don't kill you, you'll die on your own?" Angel asked curiously as the sonic ninja was taken back in surprised.

"I've asked a certain informant about that, so is it even true?" she added.

"Yes, it's just like you said...even if you do nothing, I'll die on March, either I die alone or the earth dies with me. That is the only thing will change in the future." the super creature began to speak of the human memories he had hidden away from everyone...

"He grew up trusting only in death, born in the ugly world of the slums, the only truth he could rely on even as a child was that if you kill people, they die so he chose the path of an assassin...it was his calling."

"The mighty he killed with knowledge, the intelligent he killed with strength and skills. Those gifted with both he enticed with his personal magnetism."

"When he killed a thousand of victims, he was given the nickname 'the Reaper'..."

He started talking his dark past to the class, then he turned to Angel who was now puzzled.

"And one of the thousand victims he killed, one of them were Angel-chan's parents who died in his hands."

Everyone turned to Angel who was lowering her head down, then he proceeded with his story telling.

"There was a small child named Yuuki Angel, she was pure and innocent inside and out...like she's completely harmless, not until when he took away her parents..."

"Stop...I don't want to remember anything anymore!" Angel muttered as she squatted down and covered her ears with her hands, not wanting to listen to his words anymore....It was too painful now.

Flash back:

"Hey Gakushu, let's go and mess with some people!"

A six year old Angel said to the six year old Gakushu while holding a pebble in her palm, she tossed it in the air as it fell back on her hand.

"My father will get angry if I go play with you."

"Screw your father! He's too strict, come on, let's go and play!" she grabbed his wrist and broke in a run while laughing happily as the strawberry blonde boy sighed.

"Your too reckless, you know that?" she giggled from what he said and kept running, Gakushu stared at her back, her long black hair flowing in while her red scarf is wrapped around her neck.

"Let's be hasty and let's be reckless, just being with you leaves me breathless!"

This is what made Gakushu adore her, her reckless attitude and her smiling face. He secretly admires Angel's free spirit.

✦ ✧ ✦

A pair of kids began to dash through the road while being chased by dogs from the back.

"This is really fun~!" Angel laughed while running.

"Is this how you describe your fun, Angel?!" Gakushu complained while Angel was laughing gleefully.

"Says the one who wanted to get back his little toy!" she grinned.

"S-Shut up, I can't lose my action figured Red Man!" he gripped on his toy tightly, it was the very first present he received from his father.

"You can just buy a new one than risk yourself to save it." she told him.

"If the scarf I gave you became a wreck because of those dogs, wouldn't you save it?!" he stated.

"Of course I will, it's the first present I received from you...it's precious!" she said.

"See? You would do the same." he huffed.

Angel grabbed his wrist as they jumped on the stack of boxes, out of the dogs reach. Suddenly, Gakushu dropped his toy.

"Ah! My Red Man!" he cried.

Angel hurriedly went down on the ground to get the dropped toy, the boy kept yelling at her to forget it, but she continued anyways.

"Good, it's okay..." she muttered, then the dogs came to attack her, she started to smack the dogs before their teeth grazed her.

As a child, she is shown to be very strong and has fast reflexes, after beating the dogs, she and him managed to escape.

✦ ✧ ✦

Both of them stopped running for awhile, they panted after the long marathon.

"We've manage to escape—ow!" Gakushu smacked her head lightly as she looked at him, confused.

"You're really reckless! Geez, let's go to my house and get those scratches banged up."

"Thanks but no thanks...but me and my parents are going out!"

"Huh? I see...then, drop by our house once you have come home."

"Yeah, see you later!"

Gakushu nodded as Angel started to ran to her house, he stare at her back until she was finally out of his eye vision of sight.

Unknown to both of them, that see you later, became an unexpected change of Goodbye.

She began to dash to her house, but she found something peculiar, the pavements outside their residence were filled with droplets of blood.

She followed it as it led her inside the house, her eyes widened from the unsightly view displayed right in front of her while a gasp escaped her throat from the shock.

A trace of crimson blood stained the ivory cemented floor, there were two bodies laying lifelessly, the place was a huge wreck. The vases and glasses were shattered in pieces as the wall were stained with blood.

How horrible the sight is, she was excited to go out with her family and now she saw them laying on the floor, soaked in their own blood.

This made the living daylights of hers dim out as she hysterically shouted for help, desperately.

"NOOOOO!"

Angel trembled after hearing Koro-sensei talk about her past story, some were saddened by this and afraid.

"Angel-chan...tell me, what can I do to repent for my sins, or to erase it?" he asked.

She didn't replied to Koro-sensei's question for awhile, he knew that he doesn't want the bond and trust that they made to bent and broke.

"A real sin...can't be erased, no matter whaaaaat you do."

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EDITED ON APRIL 30, 2017
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