download the ??? file but you need to beat ms lemonS with 0 anger at the end(you can use an artificat to decrease her anger or use a candy you get from mr tomatoS once) in order to access it
It's very simple. Just click on the ?????? after you're taken to the downloads! Since Project UroboroS is a separate application, you manually have to download it. (Get the true ending by NOT irritating her) or (when you get her irritated 4-9 times and meet Luxia, beat her UNDERTALE-esque boss fight) For one certain id to access Project UroboroS.
