This is Your Fate: A male reader x assassination classroom story

Y/n "Fate" Akabane. Murderer, thief, and loving older brother. Wait...one of these things is not like the other. That's right, Y/n is the older brother of Karma Akabane of class E-3. Despite how he acts to most people, he loves his younger brother more than the world itself. Which is why its a little strange that he disappears, leaving his brother behind.

Four years later, Karma Akabane joins class E-3, in an attempt to help kill Koro-sensei. Soon after, the famous assassin "Fate" shows up in Tokyo. Karma knows who Fate is, as well as Nagisa. Suddenly, Koro-sensei and Kurasuma bring the class, and Ms. Bitch, into a forest to search for Fate. Will it be a happy reunion for the brothers? And how will "Fate" react to Koro-sensei?