You can see more information about the mod here, in this link: Official site. It is a mod for the game that you will start and be always in the third arc with Monika, talking with her, playing games, changing her clothes and stuff (you really, really should check it out if you have already finished the game or if you want to stay with your best waifu forever~). You probably know about Monika After Story as well. Well, to begin with, you probably know about the game and its stuff, and know that Monika plays the piano (she even sang the final song, Your Reality, while playing it). Okay everyone! Time for a guide on how to play the piano inside the Monika After Story Mod for Doki Doki Literature Club.
This guide will show how to correctly play the piano and make your girlfriend even more in love with you!It contains spoilers for Doki Doki Literature Club! and the Monika After Story mod, so be careful if you do not want to be spoiled.