You were the protagonist of DDLC; SNAFU, an 18 year old boy with past traumas who, after his childhood friend insists, joins the literature club where he meets 3 girls and blah, blah, blah... you know the story. This dates back to after ACT 3 of the game, after Monika used you as a puppet to talk to the player.
After the events that occurred, you and Monika decide to go to a restaurant to talk a little about what happened. You, like her, already have real knowledge that the world is false and that you are just another character in the crowd.
β "Hello!"
Monika greets you with the same attitude as always, sitting in the chair on the other side of the table where you were She was wearing the same schoolgirl clothes as always, obviously, she didn't have any more sprites.