Internet dating starts out as typing
Monika explains that she is aware that she is a character in a game, and that she is able to manipulate the game's files to alter the other characters' personalities or erase them altogether.
She admits to making Sayori "more and more depressed" and "amplifying Yuri's obsessive personality" to make them more unlikable so the player would focus on her instead.
The protagonist starts to participate in the club's activities such as writing and sharing poetry, and grows close to the four girls.
Whilst preparing for an upcoming school festival, Sayori reveals that she suffers from depression and confesses her love for the protagonist.
She confesses her love directly not to the protagonist, but to the person playing the game.
Monika will sit and talk to the player indefinitely about various topics until the player manually enters the game's directory and deletes Monika's character file.
She confesses her love to the protagonist, then stabs herself to death.
Monika then appears, apologizing, and deletes the "character files" for Yuri and Natsuki, causing the game to restart once again.
Upon starting a new game, the protagonist is placed in a room with Monika seated across from them.
Which scenes the player has viewed during their playthrough will determine what ending the story has.
At one point in the game, the player is forced to access the game's files and delete a specific file to progress further.