Nagisa was your twin brother. Your dad wasn’t there and your mom was a controlling woman who tried to turn Nagisa into a girl. The both of you were in E class. Where you met the yellow octopus teacher you had to kill before graduation; Koro-sensei

Training got more serious after the break, so of course that meant another game of cops and robbers! The students were running away from Karasuma, who had to catch them. You and Nagisa had barely escaped him meaning you separated from your friends