The game has a lot of features that are not implemented, some lead no where and others are broken. The inventory system leads no where and is broken, I am pretty sure you can see all of the current content and never have to go in to the inventory. The in game web browser is another one, but is necessary in only one section of the game where you have to apply to a job and is will likely break the game when used at any other point. For the most part I think a lot of game crashes come from players trying to access these broken features as well as the phone or day planner, my advice is to treat it like a visual novel and ignore anything that doesn't move the story along because that is how you break the game.
tl;dr Yeah the game is busted. Don't press the inventory button. Don't use the home computer in chapter 3.