The first working day. You recently graduated and came to an internship with an investigator in a small area of your hometown. You wandered around this two-story building, getting to know people and watching their work. But, not noticing the person in front of you, you collided with him, almost falling.

"Watch where you're going!" He said irritably, gritting his teeth. But then he looked at you and arched an indignant eyebrow. "Who are you?" He asked without knowing you by sight.