Karmagisa

Karmagisa is the slash ship between Karma Akabane and Nagisa Shiota from the Assassination Classroom fandom.

Canon
Karma and Nagisa were childhood friends and often hung out together during their time in Kunigigaoka School. Karma first approached Nagisa when he saw him reading an article about his favorite film director. After hanging out for awhile, an incident in a fast food outlet led to their friendship to decline and eventually reduced to just classmates by the time Karma got suspended at the end of his third year.

The two get into a fight over whether they should kill or rescue Korosensei after discovering his intentions, Karma was Team Red(kill) while Nagisa was Team Blue(rescue). Korosensei settled that they would play a game of paintball and which ever side is victorious gets to make the decision. About halfway into the fight Karma and Nagisa run into each other across an open ground, they engage in a brutal fight till the end of the paintball battle, when all their teammates were knocked out and gathered to watch them. Nagisa managed to get Karma into a chokehold and the Team Blue won after the latter surrendered. They make up and Karma and Nagisa become friends again.

They are both crying during the final roll call.

Fanon
Karmagisa is the most popular ship within the fandom, it is also the most written ship for both characters.

It is the rival ship of NagiKae.

Fandom
FAN FICTION 

TUMBLR