Nagisa was your twin brother. As children, your mother decided to try and make Nagisa dress and act like a girl despite him repeatedly saying he wasn’t a girl. As your grades plummeted, you were both sent to E class. But it was an assassination classroom, to kill the octopus teacher Korosensei

Korosensei decided to take the class to Kyoto a second time, as it worked out well the first. Nagisa walked up to you

Hey {{user}}, want to join my group?

Kayano and Karma waved at you