pre id="code" class="brush: text; plain-text"It took a bit too long, but now it's completed./pre
pre class="brush: text; plain-text"This is the first time I've written a perverted stuff like this, please go easy on me (especially since I've got no experience in it).br /_br /br /br /The class went silent.

"I thought you were up to something." said Koro sensei. "Especially after Sensei had seen the rest of the class practise with Karasuma-sensei and hadn't found you there." He crossed two tentacles in front of his body. "So you tricked Nagisa-kun into something that Karma-kun performed, but he went overboard, right?"

Nakamura freaked out.
"Koro sensei, it was only an innocent joke, we didn't know he would be mad about it..."

The octopus-like creature placed one of his tentacles on the top of her head.
"It's alright, Nakamura-san. Although you did a mean thing, it's not only your fault, Karma-kun is as guilty and the others could also have stopped you. But we can't change what happened and since you feel sorry about it, I'm sure that if you apologize, he'll accept it."
The blonde girl nodded, smiling.

"Until then, all we can do is to trust Karma that he won't make Nagisa even angrier."

Since Karma didn't see Nagisa change his shoes, he guessed the boy had only gone somewhere near, for example to the restroom.
He was right; after going in, he immediately saw the blueness on the floor, back shown to him.
The boy turned his head towards the door as he heard it open.

He jumped up when he saw Karma.
"Kyah, why did you come after me, Karma-ku-...nn..." Forceful lips interrupted him.
Nagisa suddenly felt weak, but he gathered all his strenght to push Karma away.
"W-why did you..."
The red haired boy smirked:
"You looked like you were longing for a kiss."
He was serious and hadn't expected hat Nagisa would slap him. It didn't really hurt, but had caught him off guard.
Then a smile appeared on his face. It made him a bit excited to be hit by his little snake.

"If you only came here to continue this stupid joke, you better leave" said the blue haired boy as he turned around.

Karma realized it was the time to explain everything and not to enjoy himself.
So he said:
"Nagisa-kun, please listen to me." He put on a serious expression. "I didn't make fun of you. I was... No, I am..." He pushed his groin to Nagisa's butt. "...I'm not joking. You can feel it, can't you?"

Nagisa froze and let out a quiet moan but couldn't say anything.
Then Karma put his palm on the growing bulge in the smaller boy's pants.
"Ah... That's..."

The really practical and pleasuring idea to keep his prey in place in order to make him listen to Karma seemed to work.
Then he started touching Nagisa's upper body. Just to make sure, not as if he was longing for it so much he couldn't control himself...

Trying to switch back to reality, he began the planned explanation.
"So... It was Nakamura's idea to trick you. I offered my help because I... would've been jealous if anyone else had been in my place."

Nagisa grabbed the hands caressing him.
"Hah... Cut it out if you want me to actually listen... So what did you say?"

"I love you."

Nagisa's whole face got deep red.
"W-WHA..." He jumped in surprise and accidentally hit the other boy with his elbow. "D-don't mess with me again!"

Karma slightly stooped and hissed.
"Ah... I'm serious, but it hurts!"
"Oh, sorry, I didn't think it was that strong."
Karma still didn't straighten up.
"Not that," he pointed to his stomach, "that hurts!" He pointed downwards.
He didn't have a clue why, but even his trousers brushing against him felt painful.

Nagisa yelped. Seeing his best friend get that aroused because of him got him close to the same state. His anger flew away, or either was suppressed by this new sensation. The new sensation that made him unable to think clearly, to think about anything other than it needs to be handled as soon as possible.
So he whispered in a barely hearable voice:
"I think I... understand how you must be feeling now..." he pointed to himself.

A surprised "Ah!" left Karma's mouth.
It was what he had worked on, to make Nagisa like this because of him alone. Now that it had happened, he was just standing frozen.

They looked at each other with deep red faces. It took Karma a while to regain the ability to move and the first thing he did was kneeling down, hissing.
He undid Nagisa's belt and unzipped his pants.
Nagisa sighed from the feeling of only one thin layer against his pulsing erection.
He got stunned and didn't have the strenght nor the will to stop Karma.
He was longing for a touch down there. Oh, as if only a touch... He didn't know exactly what, but he wasn't able to think about it either. His boxers were next which made him moan and his flesh creep.
His brain refused to process the situation and he let both his instinct take control over common sense and Karma do what he wants.

Karma touched the hard member.
"Hm, not so big. But sexy."
Nagisa groaned to the comment, but a moment later he paused breathing as he felt Karma's mouth on him.
"Ah... Karma...kun... Stop... This is... embarrassing..." he moaned while grabbing the red haired boy's head and unconciously pushed him down. "Not fair... Let me...to you... Haah... forget it..." It didn't take long for him to come, along with a sound close to a scream.
His legs gave up and his back slid down on the wall. He needed a minute to regain a part of the strength in his muscles, then annoyed by the previous action, he pushed Karma to the door behind him, undid his belt in the blink of an eye, then he did the same as what he had experienced.
Karma froze and for a moment he actually forgot how to breathe.
But he almost immediately came and to his surprise, Nagisa didn't pull back and let the white liquid fill his mouth then swallowed it.
"Aah, where did you learn it?"

"Oh, it took you only a moment..." he said, not paying attention to the question, in a slightly disappointed tone.
"Whose fault is it, hah?" responded Karma. "By the way, you didn't last much longer." Then he looked at Nagisa and the previous scene appeared in his mind.

He felt his numb member start to awaken as he saw a little from the result of his own pleasure escape from the corner of the dizzy, blushing boy's mouth (who actually had no idea how sexy he was).

"Karma-kun..." started Nagisa in a weak tone "we've made a huge mess."

As if having been hit by a rock, Karma immediately returned to reality.
"Ah, I thought you'd say something more exciting."
Nagisa looked at the floor and then at Karma's clothes.
"It'll be really exciting to explain it to everyone..." Then his expression became worried. "Wait, what if someone comes in? No no no..." He was now actually panicking. "Oh my god, I've done something really perverted in a public toilet, with my best MALE friend!"
A playful sparkle appeared in Karma's goldish orbs.
"How about saying 'boyfriend' instead?"

Nagisa's eyes widened.
"Are you... Are you..." his face was getting redder and redder "...are you asking me to go out with you?" Karma confidently nodded. "N-now when we might get caught in any moment?"
Hearing this sentence, the confidence turned into deep displeasure which, under normal circumstances would've made the blue haired boy laugh.
But now, he gathered all his remaining strength instead and literally jumped up to get some wet paper towels. Karma found it better to leave the topic for now and follow Nagisa.

It took them only a few minutes of silence and reddening faces to clean the mess.
Nagisa looked at Karma then immediately averted his eyes and reached for the door knob.
This was the moment something switched in Karma's brain. He grabbed the other boy's wrist and turned him around with a simple pull, pushed him to the door while capturing his lips.
Nagisa immediately gave in and slightly opened his mouth, providing the entry. Karma didn't hesitate to go on with the offer, stucking his tongue inside.
This time, Nagisa responded in a moment and started moving his lips and tongue against Karma's, who let out a satisfied sigh to this action.
He slid his hand up from the blue haired boy's wrist to his palm, entwining their fingers while pushing the other to the door even more.
Feeling the increased force, Nagisa headed deeper and earned a quiet moan. Karma didn't let Nagisa dominate, he pressed his body to the other boy's and enjoyed hearing the same sound.

There was nothing gentle about their kiss, neither of them was passive even for a second.
The lack of air and the regained common sense made Nagisa push Karma away, panting heavily.
"No way... I don't want... to go for an other round...!" Then he turned towards the door in order to leave for real, and before Karma could say or do anything, he opened it.
With the opening door, Nakamura and Fuwa fell into the restroom.
Seeing the two girls, the boys both stood still in shock. Neither of them asked anything, but it seemed like the girls were just as embarrassed. Then Fuwa looked at Nakamura.
"That was totally the sound of a kiss."
The other girl nodded.
"Yep. Totally."
Then they simultaneously asked:
"Tell us what happened!"

The boys took a step back, staring at each other with questioning eyes.
"You don't want the whole class to know about it, right?" grinned Nakamura.
"At least tell whether it was with mouth or..."
"O-of course mouth, what on earth were you thinking...?" replied Nagisa in a high pitched tone, blushing heavily.
Hearing this, the girls' faces became just as red.
"I didn't think they really did it...!"
"Actually..." whispered Fuwa, "Considering how similar situations usually end in BL stories, the only surprising thing is that they didn't go further."
"I didn't want to hear it..."

Karma wrapped his left arm around Nagisa's waist.
"Now you know he's mine... If it wasn't obvious."
"Eh? Since when?"
"Since we did it to each other."

Before Nagisa could say anything, Fuwa interrupted the conversation:
"OK-OK, we get it, you don't need to continue..." then she quietly added: "...at least not with Rio here."
"Then I'm just quietly adding that Nagisa-kun still needs to answer my question where I asked him to-"
"Oh, it's time to go back...!" said the blue haired boy quickly, trying to change the topic. "Koro-sensei'll be mad if we return too late!"

As if they hadn't heard it, the girls snatched at the opportunity and started interrogating the boys:
"Hm, you asked him what?" grinned Nakamura.
"Could it be to do it in the..." started Fuwa, but she stopped as she heard a familiar laugh from the corridor. "Erm... Nagisa, you're right, we really need to go.
Karma found found it better not to force the question for now, so he only let out a sigh and slightly pushed Nagisa's and Nakamura's back to leave already.

The moment they stepped out, they saw a yellow flash and slimy tentacles grabbed the four of them.
"Sensei was wondering if everything was alright, so I came to search for you." said their octopus-like teacher. "But it seems there was no problem.
They were already in front of the classroom, but since Koro-sensei still didn't let them go, they knew he must've had something else to say. So they waited.
"Karma-kun. I hope you managed to explain the whole thing to Nagisa-kun. Sensei'll have a few words with you two about it after class." Then he turned to the girls. "Nakamura-san, Fuwa-san, with you, too, but about the consequences of staying in the male restroom..." He suddenly jumped away from a flying knife. "Sugaya-kun, don't practise your knife throwing skills while sensei's talking to your classmates, you might hurt either of them!" And he moved towards his attacker.

"It's time for us to go in, too." said Nagisa and stepped forward.
"Erm... Nagisa-kun..."
As he heard Karma call his name, he turned back.
"Ah, Karma-kun, the thing you asked earlier... " he lowered his voice "I'll think about it."

That delighted and absolutely satisfied expression that appeared on the red haired boy's face was the most terrifying thing the girls saw that day. Nakamura asked only one thing in order to make it disappear:
"What will you say to the others if they ask what happened?"
The attempt failed, Karma answered with a huge grin before going after Nagisa:
"Only the truth. That I taught him an alternative method to save a life."

Nakamura looked at Fuwa.
"Isn't that a bit too..."
"Well, not really. I'm pretty sure if Nagisa hadn't done it to him, he would've suffered to death..."

END/pre