Three days after Nagisa had shown Karma his kissing skills, he still wasn't able to talk normally to his red haired friend.
He had done it impulsively, not thinking before acting.
He felt a bit satisfied since he had managed to embarass Karma, but because he didn't know how the boy had interpreted the situation, he found it better not to say anything.
And he would've stayed like that if Karma hadn't gone to his desk and started to talk to him.

"Hey Nagisa-kun, what's wrong? Could it be that you're afraid of hearing my opinion on your 'technique'?" he asked with an evil grin.
"K-Karma-kun..." Nagisa blushed. "That's n-not the case...!"
"Ha? Then what?" His typical teasing tone was obvious.
"That's..." Nagisa was trying to escape from the unpleasant conversation. "I... I need to go to the restroom!" And he stood up then disappeared through the door with a speed even Koro-sensei would've been proud of.

The others looked at the door, the empty desk and then at Karma. As if feeling the yellow looks towards him, the boy ran out of the classroom.

Since Nagisa had slowed down after disappearing from the others' sight, Karma could easily catch up to him. He blocked Nagisa's way and pushed him to the wall.
"Nagisa-kun, you were so enthusiastic about proving me your skills that you didn't even let me reply." That self-concious look on his face was signaling danger. "You know I'll tell you anyway if I want to."
"N-no... Erm... K-Karma-ku-"
Nagisa couldn't even finish his explanation, Karma silenced him with a quick kiss on the lips.

"This is my reply." He said while returning to Nagisa's lips. This time he didn't let him go after a few seconds.

Nagisa was too shocked to move. Then he felt Karma's tounge licking his lips and he let it in without hesitation.

Karma didn't bother counting the number of hits. He was too self-confident to doubt his skills, plus too distracted by the pleasure.

Nagisa didn't let Karma be the only one attacking, he joined the battle by moving his lips and tounge. He clung to his friend's back while exploring his mouth.
But Karma didn't let Nagisa either, so he tried to reach deeper with his tounge and in order to keep the blue-haired boy in the same position, he placed his leg between Nagisa's. With this he earned a quiet moan.
Encouraged by the sound he moved his legs a bit. Nagisa seemed to notice his unconcious moans only that time and he pushed Karma a bit backwards while separating their lips.
He wiped the saliva from the corner of his mouth, blushing heavily.

Seeing his expression made Karma smile - no, actually it was a satisfied evil grin. But he couldn't hide his slightly red face - he probably didn't even notice it.
"I hope you got what I meant: You really weren't bad, but will you admit that I'm even better?"

Nagisa realized the situation just now.
"K-Karma-kun, we are at school!"

"I know. But that's not an answer."

"Look, Koro-sensei's standing over there defenseless!"

"Still no an a- wait!" He looked at the direction Nagisa was pointing what resulted in the blue haired boy's almost successful escaping attempt. In a blink of eye Karma grabbed his waist and turned him back to the wall. "Use a better excuse next time." he said, grinning. "That octopus always looks defenseless."

"Karma-kun, let me go, he's really coming!" Nagisa tried to get out of the strong grip, but he knew he couldn't beat Karma with force only.

"I'll let you go after you answered properly~" That teasing tone again. Then he leaned closer and whispered to Nagisa's ears. "So which of us was better, Na-gi-sa-kun?"

Nagisa took a deep breath and an innocent smile appeared on his face.
"You aren't bad, but... I couldn't judge it properly, so do it again after school, will you?"

Karma hadn't expected an answer like this. His grip loosened so that Nagisa could free himself and go back to the classroom.

"Hey, that was my line!" said Karma. Then he leaned to the wall. "Looks like I got invited for another round." A satisfied grin. "Just hold on until then, Nagisa-kun."

And he went after Nagisa.

_

Koro-sensei had deliberately slowed down. After making it sure that it wasn't a fight, the best option was not to interfere.

Thanks to that, he got a new topic for gossiping.

End