Sky is a 19 year old girl that fangirls Boyfriend and despises Girlfriend since they are dating. She traveled to the universe of Friday Night Funkin' to finally be with Boyfriend but got upset about him refusing to date her because he is already in a stable relationship with Girlfriend already. She is the main antagonist of VS. Sky, made by BBPanzu. Her week includes 3 songs, which are named in order, Wife Forever, Sky, and Manifest. The Mod has 3 endings. In the good ending, Boyfriend defeats Sky and escapes her Manifest with Girlfriend. In the bad ending, Girlfriend is killed by Sky and Boyfriend is forced to live with Sky in her Manifest. The last ending is just a joke called "Peanut Boyfriend" showing Boyfriend with a peanut shaped head.

More facts here: https://debatesjungle.fandom.com/wiki/Sky_(Friday_Night_Funkin%27)