ynius: Ahahaha, did it really have the feels?

Cloy552: That was the purpose of the voice! It may not be the tentacles, but Koro-sensei seems able to be the type to ask that in that situation.

Autistic-Grizzly: I don't know why, but in my opinion, Koro-sensei is more like a father figure to the E class than a teacher. Which is why I based Nagisa on that opinion, it just seems right.

geekgeraldine: Of course I will! Sorry for this one week delay though... I've been busy. :/

SakuraFlamezz: Thank you!

Guest: You don't really need to do that. I don't mind having negative reviews for my fic, because it just makes want to improve my writing. But thank you for your consideration! Also, when posting as a guest, you can change the name to something other than just Guest, and I would very much like to know your username! And thanks for the compliment! I will update as soon as I can!

Otaku4lifeeee: That's okay! When I have the time, maybe I'll come back to that chapter and make some changes, I didn't really enjoyed how that went, so yea...

Guest: Thank you!

Meow: Of course I will continue, there is no reason why I won't!

PowderBlueFeathers: Thank you! Well, when I first read the chapter, this idea just jumped into my mind, I am a little surprised that I am the only one who thought of it.

OtakuFreak4Life: Here's the next chapter!

Guest: Ahaha. I am glad you enjoyed it!

Hey there minna! BlueSkyBlue is back with Chapter 7 of Crystal Tears! I am sorry for the one week delay, I have been rather busy lately, sooooooo. Nonetheless, I am back and all done with this chapter! I hope you all enjoy!

DISCLAIMER: If I ever own Assassination Classroom... It will be moved to the Shounen-Ai genre.

Chapter 7: The Challenge

The phone rang.

Two head shot up at the sound. Oh right, today is the day.

Koro-sensei hesitantly slithered over to the phone and picked it up, putting it on loudspeaker as he did so.

"It's the last day," the familiar voice of the Kunigigaoka school principal was heard.

Koro-sensei took a deep breath. "we know."

"If he does not make it today, it is your loss."

"He will come today."

"So sure, aren't you? I'll be over to check up on the class, then."

"Wait, what?" Koro-sensei shrieked.

But the phone beeped, signalling that the principal had hung up.

Karasuma-sensei and Koro-sensei stared at each other, they have to work fast.

Bitch-sensei knocked on the door, waiting for a response. "Nagisa? I'm coming in."

She opened the door and walked into the room, noting that the teal headed boy was still asleep. The precious day had been an emotional roller-coaster for the boy, so she wasn't surpised that Nagisa was still asleep.

*flashback

"Alright, now?" she asked gently as the boy in her arms gradually stopped sobbing.

He nodded mutely, using his hands to wipe away his tears. He then proceeded to stare at his lap, not willing to meet his teacher's eyes.

"Nagisa, I have something to tell you," she said. "So please, look at me."

The boy just continued straing at his ap, as if what she had said had not registered in his mind.

She reached out and gently lifted his head up. "Nagisa, your mother has no custody over you anymore."

His eyes widened. "N-No! O-Okaa-san needs me!"

She understood what he meant immediately. Nagisa had always been a respectful boy, who puts the needs of others before himself. Being the person he is, he would not take kindly to a separation with his mother. Probably because he worries about his mother's already unstable mentality if he ever leaves her.

But he has already left her.

"You have to understand, she is no longer your mother," she tried to explain to the teal head.

"B-But!"

She knew that she shouldn't reveal it this early. She knew that he would take the news harshly, but she is willing to take the risk. She wanted to show him that she cared.

"As of now, I am your guardian."

He stiffened. For a moment, she thought that he had gone into shock.

"What?" It was spoken in a whisper. Despite her excellent hearing, she had to strain her ears to hear the uttered word.

She reached out and pulled the teal headed boy towards her, enveloping him in a hug.

"She cannot hurt you anymore," she whispered into his ear, hugging him tightly, trying to reassure him that everything will end up fine.

To her surprise, he returned the hug. Silent sobs tore through his body as he held on tightly to her.

And through that emotional moment, he murmured something to her.

"Thank you."

*End Flashback

She smiled at her young charge. As sweet as he is when he is asleep, he had to wake up, as he has to go for classes that day.

She gently prodded his face. "Nagisa, wake up."

He shuddered and his eyes shot open. For a while, he stared at her face before sitting up, wincing a little as he did so. His past injuries has not yet recovered.

"Ohayo, sensei," he greeted her softly.

She can barely contain her tears from falling. He is recovering, though the recovery will be slow. Nonetheless, she is glad. In no time, he will be back to normal boy, who is supposed to have fun together with his classmates.

"Good morning," she greeted him back. "Now, why don't you get into your uniform? The principal will be visiting to check on whether you are attending classes."

He was silent for a while, she almost thought that he was going to refuse.

"If it pleases you, okay," he spoke in a small voice.

It worries her that he always put others before himself. He had a choice to refuse, even though that choice will most slightly lead to more catastrophic results. He chose to fulfill her 'needs', facing one of his fears head on and stand a chance not recovering from it.

She touched his shoulder, causing to look up into her eyes. "Thank you."

His cheeks flushed red. "Do you mind leaving for a while before I change?"

She nodded in understanding. "Alright. Call out if you need me."

With that, she got up and left the room.

The class was silent when Bitch-sensei walked into the room with Nagisa trailing behind her. His long sleeved uniform hid the cuts on his arm wonderfully, but they knew better, having heard about what happened from their homeroom teacher. He had told them to watch what they say when approaching Nagisa, warned them about any sore spots the boy might have.

"Nagisa, welcome back!" Kayano chirped, hoping her voice did not crack as she tried to make her classmate feel welcomed.

The teal head shot her a weak smile. "Thank you."

Hushed whispers broke out through the classroom, as if they were discussing the best way to calm him down.

Bitch-sensei cleared her throat, silencing the class as they turned their attention to her. "Minna, the principal is visiting us today. Do be on your best behavior."

"Yes, sensei!" The class chorused.

She nodded with satisfaction and left, not before pulling Nagisa into a reassuring hug to signal to him that everything will be okay.

And soon, the door slid open to reveal the brown headed principal of Kunigigaoka School, Asano Gakuho. He walked into the classroom with his eyes trained on each of them, as if he was trying to decide the best way to torture each one of them to madness. When his eyes finally landed on Nagisa, his mouth widened into a smile that sent chills down everyone's spine.

"Ah, Shiota Nagisa... Where have you been this past four weeks?" He asked pleasantly, his eyes showing every inch that he was displeased with the teal headed boy.

Nagisa tried to resist staring into those calculative eyes, but compulsion led him to do so, and goosebumps spread throughout his body as he stared into the pair of purple eyes. "I was very sick, sir," he answered respectfully.

"Sick? I had called many hospitals to check up on you, you were in none. How odd," the principal replied, masking his voice in thoughtfulness.

"M-Mr Principal! Please do not openly harass my students!" Koro-sensei's panicked voice came from the entrance to the class.

Asano Gakuho turned to the octopus, a wide smile on his face as he flung his arms wide. "Perfect! Just who I was looking for!"

From his pocket, the principal withdrew an anti-sensei knife and handed it to Nagisa.

"I've heard that you are a really talented assassin, Nagisa-kun... Can you give me a demonstration?"

DUN DUN DUN! Cliffhanger! I hope that this chapter was good enough for you guys... I have been quite busy lately and had not found time to write. It is rather short, but I hope you all enjoyed it! Thank you all for reading and till then, ja~!

Yours,

BlueSkyBlue,

a.k.a. Otonashi Hayuka