It's about a guy that works/worked at a secret (government?) facility. They build a thing that allows him to travel in time. He works at this place for 7ish years. Everyone there lives there. When you first arrive you leave stuff at a desk that you get when you leave. When he leaves he gets stuff that isn't his because he went back and changed what was there. His future self replaces his stuff with things that are similar but different and are items that he needs (for example, he gets a bullet). He eventually has to fight someone or take down the company or something like that. There is a girl involved and in the end he leaves her a message on her mirror by marking it so that it can only be seen when there is a lot of steam. What's the name of this move?