#1. What is Project UroboroS for?

#2. Why does the files for MsLemonS, MrTomatoS, and Project UroboroS ask for admin privileges before running?

1# As i have previously seen, Project UroboroS is where if you can perfectly pass Ms.LemonS, she will modify your ID and give you access to UroboroS, But that isn't what it is for, you know the codes you get when you get an ending? If you put in the codes in Project UroboroS they will give you a description for each personality, AKA when you get Ms.LemonS to 10 Anger, she turns into LUXIA. That's an personality.

2# I don't know the exact answer to this, but I think admin privileges gives Ms.LemonS/Ms.TomatoS the permission to create files inside your computer.

If that made you understand why, i'm happy that i helped you!