Uni it's the name of the city that the game takes place in and you play as a female protagonist, a girl whose fate is entirely up to you. Much like a date-sim game, you'll attend school, walk around,...
If you receive an exception error, most of the time, it's safe to click "Ignore" a few times and keep playing.
If you don't see the game menu after loading in, try resizing by using cinema mode.
If nothing works, please use the report button.